A 7.80-g bullet moving at 510 m/s penetrates a tree trunk to a depth of 5.40 cm. (a) Use work and energy considerations to find the average frictional force that stops the bullet. N. (b) Assuming the friction force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.
A 7.80-g bullet moving at 510 m/s penetrates a tree trunk to a depth of 5.40 cm. (a) Use work and energy considerations to find the average frictional force that stops the bullet. N. (b) Assuming the friction force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.
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Transcribed Image Text:A 7.80-g bullet moving at 510 m/s penetrates a tree trunk to a depth of 5.40 cm.
(a) Use work and energy considerations to find the average frictional force that stops the bullet.
(b) Assuming the friction force is constant, determine how much time elapses between the moment the bullet
enters the tree and the moment it stops moving.
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