A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. (a) What is the tension in the rope if he climbs at a constant speed? What is happening in this instance? A 1100-kg car pulls a boat on a trailer. (a) What Is the acceleration of the crate? Acceleration (a) = -30 m/s2, Q:A car of mass 1600 kg begins to roll down a hill which is inclined at 15 degrees from the ground., Q:You push a box with a force of 200 N. It slides with a constant velocity across the floor. horizontal., Q:3. Q:(1) A mug rests on an inclined surface, as shown. 5 - Dana has a sports medal suspended by a long ribbon Ch. a) What is the net acceleration on the box?, Q:Mary applies a force of 75 N to push a box with an acceleration of 0.43 m/s?. 5 - An astronauts weight on earth is 800 N. What is Ch. a. 20 N 5 - Suppose you are holding a box in front of you and Ch. What is the relationship between the center of pressure and base of support? Generally the force that must be applied to the sled is equal to the frictional force experienced by the sled which is mathematically represented as, This site is using cookies under cookie policy . 5 - A 5.0 kg dog sits on the floor of an elevator that Ch. How does power relate to force and velocity? -energy absorbed and lost through deformation (a) What is the baseballs acceleration in m/s and in Ws? Feedback I = mk2 Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom; A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? defensive back vs wide receiver in football, when one body exerts a force on a second, the second body exerts a reaction force that is = in magnitude and opposite in direction of the first body Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. How much force must he apply to the sled? a=Fforward-Fresistivem=1950N-1200N1100kg=0.6818ms2 F A 100 kg block shown is acted upo by When the freight car begins to move, the string makes an angle of 35.0with the vertical. Assume that your brain is 40 cm from your heart and that =1060kg/m3\rho=1060 \mathrm{kg} / \mathrm{m}^{3}=1060kg/m3 for your blood. EDUCATION. We have step-by-step solutions for your textbooks written by Bartleby experts! Acceleration, a = 2.0 m/s2, Q:The contestant now pulls the block of ice with a rope How much force must he apply to the sled? (a) What Is the tension in the rope if he climbs at a constant speed? When the elevator is accelerating downward at 3.8m/s2 , the scale reads 60 N. (a) What Is the mass of the backpack? -Angular velocity () increases when the MOI decreases and it decreases as the diver increases MOI. acceleration due to, Q:There is a 67 kg rubber sled on a wet concrete floor. 5 - Riders on the Tower of Doom, an amusement park Ch. When the bat hits the baseball, two forces act on the ball: (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? One is a 2000N forward push by, A:a) 5 - A fisherman has caught a very large, 5.0 kg fish Ch. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. The object slow down with an acceleration of -5 m/s2. See Answer The scale reads 334 N. What is the best answet. A Mark for Review What is the tension in the rope if Angle,=140, Q:A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s. N3 second class: lever positioned with the resistance between the applied force and the fulcrum (ex: wheel barrow, hedge clippers) air. The figure shows the force exerted on the car by the wall over the course of . (a) What is the tension in the rope if he climbs at a constant speed? Part A 0.30,and 1 6-22 Paunt QUALIFICATIONS: Candidate must have excellent equipment, computer, and management skills. The surfaces of the blocks are rough. Snapsolve any problem by taking a picture. Do wide-track tires = better traction over normal width tires? Calculate the force required to push the sled across the field. How much force must he apply to the sled?A. 18 N B. approximate, A:Given 1 m/s2, what is the ships mass? over his shoulder at the same angle above the, Q:QUESTION 6 Suppose Kevin, a 60.0-kg gymnast, climbs a rope. Find answers to questions asked by students like you. A mechanical advantage of less than 1.0 is a disadvantage in the common sense of the term. What is an example of law of acceleration? 2 See answers Advertisement Lanuel The amount of force the football player must apply to the sled is 176.4 Newton. A man applies 803 N of force to We reviewed their content and use your feedback to keep the quality high. 5 - A 2.0 kg ball is suspended by two light strings as Ch. 5 - Is it possible for an object to travel in air Ch. How much force must he apply to the sled? A. A Mass of 15.0 kg is on an incline with a coefficient of static friction of iPad. 11. 5 - Researchers often use force plates to measure the Ch. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? Group Practice Problem: The coefficient of dynamic friction between the grass and a F = average force applied to an object A football player at practice The coefficient of kinetic friction between the grass and constant speed. If the two players entangle and continue traveling together as a unit following the collision, what is their combined velocity? of an applied, A:Letthemassofblock=mVelocityofblock=ConstantAppliedforce=Fapp, Q:(I) Sketch the free-body diagram of a baseball (a) at the moment it is hit by the bat, and again (b), A:Part (a) Free-Body Diagram P = Fd/t (Uk ( (kinetic)) is always smaller than Us ( (static)) ) A football player pushes a 670 N blocking sled. -remaining force changes the objects' directions, Perfectly elastic: no energy lost. 5 - An airplane moves through the air at a constant Ch. A spring is stretched by applying a force to it by hands. (a) Show that the minimum value of P that will move the crate is given by P=sFgsec1stan Figure P5.45 (b) Find the condition on in terms of s, for which motion of the crate is impossible for any value of P. What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her straight up at 7.50m/s2 ? 5 - A 75 kg passenger is seated in a cage in the Sling Ch. The wheels of a midsize car exert a force of 2100 N backward on the road to accelerate the car in the forward direction. Displacement of the object along the line of action of the force during the time the force acts on the object. 5 - Two football players are pushing a 60 kg blocking Ch. 5 - A 1.0 kg wood block is pressed against a vertical Ch. Quantity of angular motion possessed by a body measured as the product of moment of inertia and angular velocity 0.20 m B. A- 3, A:Consider an object for which the distancest given as a function of timet. Upon differentiating, Q:B vo = 13.4 m/s (130 mi/h) Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. the acceleration. We have to calculate net force acting, Q:An object has a mass of 300 kg. Coefficient of kinetic friction k= 0.3 C.600 N -e = [(v2post - v1post)/(v2pre - v1pre)], Impact between a moving body and a stationary one Forward force on the boat (F) = 2000 N, Q:A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its, A:a)Weknow,V=u+atgiven,V=90km/h=90x1033600=25m/su=0t=10, Q:A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor. Can the normal force on an object be directed Ch. (b) What is the net force on the car? Mass of the boxes are m1 and m2 respectively. A boy pushes the sled and it 5 - Running on a treadmill is slightly easier than Ch. The coefficient of kinetic friction between the grass and the sled is 0.30. The moment of inertia (I) represents an objects resistance to angular change about some axis 300 N Job Description. Each pull with a 3 the South., Q:In t-ball, young players use a bat to hit a stationary ball off a stand. Pushing Blocks 60 N C. 180 N D. 600 N. Find answers to questions asked by students like you. -(Law of inertia)A body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state, the tendency of an object to maintain its current state of motion, whether motionless or moving at a constant velocity, The magnitude of vertical GRF during level ground running is 2-3 times the runners body weight; GRF is affected by rear foot, mid foot, and forefoot strikers; stride length generates more GRF too and can be counterproductive in runners. of 25 N. 5 - What is the drag force on a 1.6-m-wide, 1.4-m-high Ch. F = 20 N 3. What factors influence u (the coefficient of friction)? A 0.250 kg toy car moving with a speed of .860 m/s collided with a wall. 18 N B. 5 - A construction crew would like to support a 1000 Ch. -MOI (I) reduces when the diver goes from a layout to a tuck and then increases as the diver opens up to enter into the water. Associate's Degree in Applied Science, Animal Health Technology, or similar field is preferred, with at least two years of work experience in animal control. the, A:acceleration of block is given by (most impacts are somewhere between), When two bodies undergo a direct collision, the difference in their velocities immediately after impact is proportional to the difference in their velocities immediately before impact; coefficient of restitution (COR) measures the elasticity of an impact A football player at practice pushes a 60 kg blocking sled across the field at a constant . Want better grades, but cant afford to pay for Numerade? From the, Q:The rocket sled shown in Figure 4.5 accelerates at a rate of27.0m/s2. Must have experience with both pets and livestock animals in a commercial setting and some experience with wildlife and exotic animals. A: v = 7.78 m/s in the direction of the force application, product of a force and the time over which the force acts 5 - The two blocks in Figure Q5.28 are at rest on Ch. coetticient 5 - MCAT-Style Passage Problems Sliding on the Ice In Physics for Scientists and Engineers, Technology Physics for Scientists and Engineers: Foundations https://www.youtube.com/watch?v=3rZR7FSSidc. A. negligible mass. the sled is 0.30. 267 N, pushes 60 kg blocking sled across the field at 31. initial speed of ball , u = 0 m/s 60 N C. 180 N D. 600 N The max mechanical advantages for the brachialis, biceps, and brachioradialis occur between angles at the elbow of approximately 75-90 degrees. a., Q:1) An object with a force accelerates as shown in the equations: (the picture) How much force must he apply to the sled 1 See answer Advertisement okpalawalter8 Answer: The value is Explanation: If the force of friction including air resistance is 250 N and the acceleration of the car is 1.80 m/s2, what is the mass of the car plus its occupants? Get free access to expert answers Get 3 free question credits The rotary effect created by an applied force (i.e. She needs to move a heavy crate of bananas ( m = 80 kg) to the, Q:Mr. Vollmayer pulls his children (21kg and 24kg) on a sled (5kg). The coefficient of kinetic friction between the grass and the sled is 0.30. What is the acceleration of. 1 W = 1 J/s 1. relative roughness and hardness of the surfaces. Find P for motion to, Q:5 Clear The coefficient of kinetic friction between the grass and the sled is 0.30. Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant. A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? Calculate the force required to push the sled across the field. The traffic light hangs from the cables as shown. F = 20 N, 3. The mass of the boat plus trailer is 700 kg. The coefficient of kinetic friction between the grass and the sled is 0.30. Draw a force diagram for, A:SOlution: The ramp is tilted at 20 and is frictionless. 5 - a. First week only $4.99! This job requires lifting up to 100 pounds and dealing with dangerous animals. (derived from newton's 2nd law: f = ma), Arm motion contributes 12-13% of the total upward momentum for a vertical jump Angle of the incline = 36.87o, Q:Q4: Two boxes with masses m, and m; are placed on a frictionless horizontal surface and pulled EX: while standing or sitting on a swiveling chair (rotate your upper body in 1 direction -> chair + lower body rotate in the opposite direction) (b) Find the maximum acceleration the truck can have before the box slides. W= Fd a. Once they stop pushing; how far will the sled slide before coming to rest? As the spring is stretched,, Q:A 60-kg crash test dummy moving at 13.4 m/s (130 mi/h) stops during a collision over a distance (a) What is 5 - a. accelerates 0.01, Q:6. This, Q:A boat moves through the water with two horizontal forces acting on it. -how quickly or slowly work is done m = total body mass Ospreys are birds that eat fish. (increases in impact velocity and temp increase COR). a. (a) What Is the tension in the rope if he climbs at a constant speed? (c) What does the scale read if the elevator moves upward at constant velocity? A 5.00105 -kg rocket is accelerating straight up. A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. 5 - A wood block is sliding up a wood ramp. The total angular momentum of a given system remains constant in the absence of external torques What is the tension produced on the clothesline by the dress? Mass of drone = 0.30 kg 200 kg football blocking sled is 0.20. 2 A constant force of magnitude F is applied to the first block as in Figure P4.68. 5 - For Questions 17 through 20, determine the tension Ch. Friction Group Practice Problem: The coefficient of dynamic friction between the grass and a 200 kg football blocking sled is 0.20. How much force must he apply to the sled? We dont have your requested question, but here is a suggested video that might help. When you push a box along the hoor with a force of 7 N. the bo moves at, Q:Freaks yon. 5 - You are going sledding with your friends, sliding Ch. with the horizontal., Q:A boat moves through the water with two forces actingon it. If a 100 kg footbalil player only pushes horizontally The coefficient of kinetic friction between the grass and the sled is 0.30. A. A 5.00105 -kg rocket is accelerating straight up. 60 N C. 180 N D. 600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy, Educator app for Question: 31. The coefficient of kinetic friction between the grass and the sled is .30.How much force must he apply to the sled? 5 - It takes the elevator in a skyscraper 4.0 s to Ch. Explain why normalized relations may not comprise an efficient physical implementation structure. A 1000-kg car pushes a 2000-kg trck with a dead battery The wheels of the car push on the road, Q:Q5. near a marsh K = 0.30 2. Compare the force block A, A:Given: a = 1.4 m/s2 5 - A 1000 kg car traveling at a speed of 40 m/s skids Ch. with, Q:6. Full time. Your question is solved by a Subject Matter Expert. 2003-2023 Chegg Inc. All rights reserved. One is a 2000N forward push by the, Q:A man pushes a 92 kg crate with 272 N of force.The crate experiences a force of friction Math Homework Questions and Correct formulas. Solo Practice Practice 17 Questions Show answers Question 1 900 seconds Q. Free body diagram, Q:Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25 -kinetic: energy due to motion 97% of Numerade students report better grades. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball. Draw a free-body diagram on a coordinate plane for this situation. 5 - The three ropes in Figure P5.1 are tied to a Ch. The coefficient of kinetic friction between the grass and the sled is 0.30. How much force must he apply to the sled? How much force does an 80 kg astronaut exert on Ch. (b) What is the net force on the car? If a 100 kg footbail player only pushes horizontally against the sled, how large must the horizontal force e to keep the sled moving? (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? force acting on the 50 kg block shown if. 5 - The forces in Figure P5.10 are acting on a 2.0 kg Ch. hd = height from which ball is dropped How much force must he apply to the sled? A. The coefficient of static, A:Given: -offensive lineman will not move unless force is applied Mass of sled 5 - Youve always wondered about the acceleration of Ch. 5 - When you bend your knee, the quadriceps muscle is Ch. 5 - A 2200 kg truck has put its front bumper against Ch. This diagram indicates all types of, Q:6. What does knee angle do to MOI in a sprinter? of mass m. The, Q:atus: Mass of the airplane, \[m=9000\text{ kg}\] Once they stop pushing; how far will the sled slide before coming to rest? 5 - Riders on the Power Tower are launched skyward Ch. the collision. Thus, to be in equilibrium, the body COM must be within the boundaries of the base of support. Multiply F by the coefficient of kinetic friction between the player and the sled to get the force required to push the sled across the field. s = 0.65 m The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - A football player at practice pushes a 60 kg Ch. When the elevator is accelerating downward at 3.8m/s2 , the scale reads 60 N. (a) What Is the mass of the backpack? 0.77 m *Response times may vary by subject and question complexity. Get 5 free video unlocks on our app with code GOMOBILE, foothall player at prartice pushes 200 pound blocking sled across the field constanr speeo Howmuch force must he apply to the sled? Friction mass of rock m= 3 kg iPad. How much force must he apply? The distance, Q:6) A box of 4Kg sits on a table. H = mk2w. 5 - The 100 kg block in Figure P5.76 takes 6.0 s to Ch. The coefficient of kinetic friction between the grass and the sled is 0.30. Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. of, A:Given : 5 - A 50 kg box hangs from a rope. 1. Suppose a 60.0-kg gymnast climbs a rope. Depends on qualifications and experience. To find Start your trial now! 5 - Seat belts and air bags save lives by reducing the Ch. mass of ball , m =140 g = 0.14 kg A 58 kg person steps on a scale in an elevator. angle of inclination of ramp, = 20o a. Acceleration of drone = 5.0 m/s2 18 N B. Textbook solution for College Physics: A Strategic Approach (3rd Edition) 3rd Edition Randall D. Knight (Professor Emeritus) Chapter 5 Problem 29MCQ. 5 - In a head-on collision, a car stops in 0.10 s from Ch. Watch these videos for an in-depth look. first class: lever positioned with the applied force and the resistance on opposite sides of the axis of rotation (ex: seesaw; scissors) third class: lever positioned with the applied force between the fulcrum and the resistance (ex: shovel, bicep curl). Extreme knee flexion can effect MOI of the swinging leg, distance from the axis of rotation to a point where the body's mass could be concentrated without altering its rotational characteristics 5 - A truck is traveling at 30 m/s on a slippery road. Ch. A box rests on the back of a truck. How much force must he apply to the sled? Mass m= 150 kg 0.68 m C.1.0 m D. 6.6 m, Two football players are pushing 60 kg blocking sled across the field at a constant speed of 1.5 m/s_ The coefficient of kinetic friction between the grass and the sled is 0.30. Status. For equilibrium, the center of pressure must be directly below the body COM shot with a force, Q:When you learn to drive, you discover that you need to let up slightly on the break pedal as you, A:Static friction is a frictional force that resists the motion of an object trying to move from a, Q:Q6: Determine the magnitude of the friction 5 - What is the minimum downward force on the box in Ch. 5 - A wood block, after being given a starting push, Ch. A. If crew members apply an average force of 100 N in the direction of motion of the 90 kg toboggan for a period of 7.0 s before jumping in, what is the toboggan's speed at that point? 5 - Figure P5.23 shows the velocity graph of a 75 kg Ch. For considering the, Q:1. 5 - The wood block in Figure Q5.22 is at rest on a Ch. A discus thrower exerts an average force of 1000 N against the discus while the discus moves through a displacement of 0.6 m in the direction of this force. (a) When the truck accelerates forward, what force accelerates the box? at the angle shown. -Since the diver cannot gain angular momentum in the air he must take off with sufficient angular momentum to complete the required number of rotations. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, Find more solutions based on key concepts. A football player at practice pushes a 55 kg blocking sled across the field at a constant speed. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. The mass of the baseball is 145 g (.145 kg). An object is at rest an will remain at rest, Ability to resist a disruption of equilibrium The figure shows the overhead views of four situations in which forces act on a, A:Q7. If he exerts a, Q:A baseball accelerates forward when it is hit by the bat as shown in the image below. A 90 kg hockey player skating with a velocity of 6 m/s collides head-on with an 80 kg player traveling at 7 m/s. Units = kg m2/s Start your trial now! What is the, A:Hey, since there are multiple questions posted, we will answer first question. International units for power are watts (W) How much force must he apply to the sled? A 50 kg box hangs from a rope. 5 - Decide whether each of the following is true or Ch. If the resulting acceleration is 0. answer choices 18 N 60 N 180 N 600 N Question 9 60 seconds near a forest A 20.O-g ball hangs from the roof of a freight car by a string. 5 - An early submersible craft for deep-sea Ch. near a deser -yes, because of the more weight, width doesn't matter 5 - The ramp in Figure P5.75 is frictionless. The force of friction on the sled, A:Since you have posted a question with a multiple sub parts, we will solve first three sub - parts, Q:Sledding A sled with a mass of 80.0 kg is pulled Force exerted on the object 1. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - Land Rover ads used to claim that their vehicles Ch. Using a rope, a man applies a force to the crate, as, Q:6 Given quantities: If the vehicle is accelerating at, A:Write down the given values using suitable variables. College Physics: A Strategic Approach (3rd Edition), Physics for Scientists and Engineers with Modern Physics, University Physics with Modern Physics (14th Edition). A man exerts a horizontal force of 125 N on a crate with a mass of 30.0 kg. a) What force does the earth exert on the box? Fnet = net, Q:FRICTION (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? How much force must he apply to the sled?A. A car is, Q:Dynamics - A 4 kg block sitting on a table is pulled to the right by a 15 N force. View this solution and millions of others when you join today! Assume the clothesline is massless.