A 2.90 g bullet moving at 260 m/s enters and stops in an initially stationary 2.80 kg wooden block on a horizontal frictionless surface.
A- What's the speed of the bullet block combination?
B- What fraction of the bullet's kinetic energy was lost in this perfectly inelastic collision?
C- How much work was done in stopping the bullet?
D- If the bullet penetrated 5.00 into the wood, what was the average stopping force?