A 780 grams bullet moving at 690 ms penetrates a tree trunk, Ask an Expert

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A 7.80 grams bullet moving at 690 m/s penetrates a tree trunk to a depth of 6.40 centimeter.

(a) Use work and energy considerations to compute the average frictional force that stops the bullet.

(b) Assuming the frictional force is constant, find how much time elapses between the moment the bullet enters the tree and the moment it stops moving.

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Category:- Physics
Reference No.:- M91220444

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