during the slide? average friction

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answer c only.... value for a and b ..i.e., potential and kinetic energy change are -2940 J and 392 J....

A 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s just
before hitting the ground. (a) What change occurs in the gravitational potential energy of the bear-
Earth system during the slide? (b) What is the kinetic energy of the bear just before hitting the ground?
(c) What is the average frictional force that acts on the sliding bear?
Transcribed Image Text:A 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s just before hitting the ground. (a) What change occurs in the gravitational potential energy of the bear- Earth system during the slide? (b) What is the kinetic energy of the bear just before hitting the ground? (c) What is the average frictional force that acts on the sliding bear?
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