9)A block of mass m sliding on a horizontal floor has an initial velocity v; at t= 0. If the block-floorinterface has coefficients of friction, u, and H , how far will the block slide before stopping?= 2v? / (H8)A) Ax =B) Ax = v? / (H8)XC) Ax = v? / (2H8)D) Ax=v,/ /24,8E) The mass needs to be given to find Ax.F) None of the above

Answered: Image /qna-images/answer/08cf7480-ab9f-4822-b0fa-1b7447b98db3.jpg

Answered: A block of mass m sliding on a…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 51P: A car’s bumper is designed to withstand a 4.0-km/ h (1.1-m/s) collision with an immovable object...

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A car's bumper is designed to withstand a 4.0-km/h (1.1-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force on a bumper that collapses 0.200 m while bringing a 900-kg car to rest from an initial speed of 1.1 m/s.
A car’s bumper is designed to withstand a 4.0-km/ h (1.1-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force on a bumper that collapses 0.200 m while bringing a 900-kg car to rest from an initial speed of 1.1 m/s.
A person steps horizontally off the roof of a single-story house that is 3.1 m high. When his feet hit theground below, he bends his knees such that his torso decelerates over a distance of 0.65 m before coming to astop. If the mass of his torso is 50 kg, what is the average net force exerted on his torso over this distance?
If an eraser is thrown upward from a tower with an initial velocity of 5.0 m/s, then what is the eraser's velocity after 7.0 seconds? Neglect air resistance and use g=-9.81m/s 2
At an accident scene on a level road, investigators determine that a car slid for a distance 72 m before coming to a stop. It was a rainy day and the coefficient of friction was estimated to be 0.36. - What was the speed of the car when the driver slammed on the brakes? - Why does the car's mass not matter?
A bicyclist can coast down a 8.18 degree hill at a constant speed of 5.55 km/h. If the force of air resistance is proportional to the speed v so that Fair = c v, calculate the average force (in N) that must be applied in order to descend the hill at 19.3 km/h. The mass of the cyclist plus bicycle is 78.6 kg.
If a 2.0 kg weight falls 4.0 meters vertically downward from rest, how fast will it be going just before it hits the ground? Take g to be equal to 10 m/s^2 and ignore air resistance.
10. A roller coaster reaches the top of the steepest hill with a speed of 5.40 km/h. It then descends the hill, which is at an average angle of 20° and is 55.0 m long. What will its speed be when it reaches the bottom? Assume µk = 0.12.
27 - A pram with a mass of m = 25kg starts to move from a standstill and travels d = 8m under the effect of a 100N force. Find the speed at which the car has at the end of the road, taking into account that the car is moving on a frictionless plane.A) 12m / s B) 8m / s C) 3m / s D) 15m / s E) 32m / s
A 5.1-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 1.8 m/s to the right. The coefficient of friction between the pond and the toboggan is 0.14. Determine the distance that the toboggan slides before coming to rest. (round to the nearest hundredth)
2. A 6.8-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 1.9 m/s. The coefficient of friction between the pond and the toboggan is 0.13. Determine the distance which the toboggan slides before coming to rest.
The coef of friction between the block of mass m1 = 3.0 kg and the surface is 0.400. The system starts from rest. What is the speed of the ball of mass m2 = 5.0 kg when it has fallen a distance of h = 1.50 m.

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