1. You are working as a letter sorter in the Post Office. Postal regulations require that employees' footwear must have a minimum coefficient of static friction of 0.5 on a specified tile surface. You are wearing athletic shoes for which you do not know the coefficient of static friction. To determine the coefficient, you imagine that there is an emergency and start running across the room. You have a co-worker time you, and find that you can begin at rest and move 4.23 m in 1.20 s. If you try to move faster than this, your feet slip. Assuming your acceleration is constant, does your footwear qualify for the postal regulation?

1. You are working as a letter sorter in the Post Office. Postal regulations require that employees' footwear must have a minimum coefficient of static friction of 0.5 on a specified tile surface. You are wearing athletic shoes for which you do not know the coefficient of static friction. To determine the coefficient, you imagine that there is an emergency and start running across the room. You have a co-worker time you, and find that you can begin at rest and move 4.23 m in 1.20 s. If you try to move faster than this, your feet slip. Assuming your acceleration is constant, does your footwear qualify for the postal regulation?

Name: Solve the problem.1. You are working as a letter sorter in the Post O
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Description: Solve the problem.1. You are working as a letter sorter in the Post Office. Postal regulations require thatemployees' footwear must have a minimum coefficient of static friction of 0.5 on aspecified tile surface. You are wearing athletic shoes for w

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter6: Applications Of Newton’s Laws Of Motion

Section: Chapter Questions

Problem 27PQ: Curling is a game similar to lawn bowling except it is played on ice and instead of rolling balls on...

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A brick of mass m=70.4kg slides along a horizontal surface. The coefficient of kinetic friction between the brick and the surface is μk=0.47. The brick has an initial speed of v0=13.1m/s in the positive x direction, as shown. a. Write an expression for the x-component of the frictional force the brick experiences in terms of the given variables and variables available in the palette. b. What is the magnitude, in newtons, of the frictional force? c. How far, in meters, will the brick travel before coming to rest?
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I watched a lot of Looney Toons when I was a kid, and liked that the Roadrunners legs would spin for a second or two before their claws caught traction. a. With a coefficient of kinetic friction 0.2 what acceleration will the roadrunner experience while their feet are sliding accross the ground? b. How far forward will the roadrunner drift in a half second, starting from rest under this acceleration? c. After catching traction the Roadrunner accelerates away, travelling 10 m to get offscreen in one fifth of a second. What was their coefficient of static friction?
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Curling is a game similar to lawn bowling except it is played on ice and instead of rolling balls on the lawn, stones are slid along ice. A curler slides a stone across a sheet of ice with an initial speed vi in the positive x direction. The coefficient of kinetic friction between the stone and the curling lane is k. Express your answers in terms of vi, k, and g only. a. What is the acceleration of the stone as it slides down the lane? b. What distance does the curling stone travel?
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