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Physics, 29.01.2021 16:30 PearlJam5492
A puck of mass 0.110 kg slides across ice in the positive x-direction with a kinetic friction coefficient between the ice and puck of 0.167. If the puck is moving at an initial speed of 15.0 m/s, find the following.
(a) What is the force of kinetic friction? (Indicate the direction with the sign of your answer.)
N
(b) What is the acceleration of the puck? (Indicate the direction with the sign of your answer.)
m/s2
(c) How long does it take for the puck to come to rest?
s
(d) What distance does the puck travel during that time?
m
(e) What total work does friction do on the puck?
J
(f) What average power does friction generate in the puck during that time?
W
(g) What instantaneous power does friction generate in the puck when the velocity is 4.00 m/s?
W
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