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acsin92
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Homework Statement
A bullet with a mass of 0.005 kg and moving with a speed of 400 m/s penetrates a distance of 0.08m into a wooden block firmly attached to the Earth. Assume that the force stops it is constant. Compute for:
a.) acceleration of the bullet
b.) accelerating force
c.) time of acceleration
d.) impulse of the bullet
Homework Equations
I think I'll use
a=-Vi^2 / 2s.
for the acceleration of the bullet.
then for the acceleration of the bullet,
F=m(Vf-Vi)
then for the time of acceleration,
t = m(Vf-Vi) / F
am i right?