- #1
lilwigz
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Homework Statement
A 5.00g bullet moving at 600.0 m/s penetrates a tree trunk to a depth of 4.00 cm.
A) Use work and energy considerations to find the magnitude of the force that stops the bullet.
B) Assuming that the frictional force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment the bullet stops moving.
Homework Equations
Ek= 1/2mv^2
W=fdcos(0)
The Attempt at a Solution
I tried to do Ek=1/2mv^2
Ek= 1/2 x ( .005kg) x (600m/s)^2 but i think that's wrong