A .22 rifle bullet, traveling at 350 m/s, strikes a block of soft wood, which it penetrates to a depth of 0.130 m. The block of wood is clamped in place and doesn't move. The mass of the bullet is 1.80 g. Assume a constant retarding force.
a) How much time is required for the bullet to stop?
b) What force, in newtons, does the wood exert on the bullet?
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