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A hockey puck struck by a hockey stick is given an initial speed v0 in the posit

ID: 1692335 • Letter: A

Question

A hockey puck struck by a hockey stick is given an initial speed v0 in the positive x-direction. The coefficient of kinetic friction between the ice and the puck is µk.
(a) Obtain an expression for the acceleration of the puck. (Use the following as necessary: µk and g.)
a=-µkg (i figured out this answer (part a) but i am stuck on part b)


(b) Use the result of part (a) to obtain an expression for the distance d the puck slides. The answer should be in terms of the variables v0, µk, and g only.
d=__

Explanation / Answer

Given:
Initial velocity = v0
acceleration = -µkg
from kinematic relations v^2-u^2 = 2as s= v^2-u^2/2a consider the final velocity of the puck is zero. d = -v0^2/-2µkg
d = v0^2/2µkg
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