A 7.80 g bullet is initially moving at 650 m/s just before it penetrates a tree trunk to a depth of 4.70 cm. (a) What is the magnitude of the average frictional force (in N) that is exerted on the bullet while it is moving through the tree trunk? Use work and energy considerations to obtain your answer.   b)  Assuming the frictional force is constant, how much time (in s) elapses between the moment the bullet enters the tree trunk and the moment it stops moving?

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A: Mass of bullet (mb)=7.8 g Initial speed of the bullet (u)=690 m/s Penetration in trunk (d)=6.2 cm

Q: A 7.80 g bullet is initially moving at 470 m/s just before it penetrates a tree trunk to a depth of…

A: Given Data: The mass of the bullet is, m = 7.80 g. The initial velocity is, v = 470 m/s. The…

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Q: A 7.80-g bullet moving at 650 m/s penetrates a tree trunk to a depth of 6.50 cm. (a) Use work and…

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