A 7.80-g bullet moving at 590 m/s penetrates a tree trunk to a depth of 5.60 cm. (a) Use work and energy considerations to find the average frictional force that stops the bullet.  N= (b) Assuming the frictional force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.  s=

Q: questions b,c and d please!

A: Given,

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A: mass of seal (m)= 111 kg Initial height (h) = 1.90 m θ = 26.5oInitial velocity (u) = 0 msfinal…

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A: mass, m = 71 kg  force, F = 150 N  distance, d = 5.6m  angle, θ = 29°

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A: Free body diagram

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A:

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A: Givenm=8 kgθ=53°μk=0.4

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A:

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A: A box is raised at constant speed by a man pulling up on a rope.

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A: Here Mass of a box = 18kg released from rest on a rough inclined plane and slides to the bottom.…

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A:

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