a. Calculate the speed of combined object directly after the bullet is stuck inside the block. b. Calculate the lost kinetic energy in this collision. c. Calculate the coefficient of kinetic friction between the wooden block and the rough surface.
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A bullet of mass 50 g is fired at a speed of 300 m/s towards a 700 g wooden block that rests on a rough horizontal surface. The bullet is stuck inside the block and they both move as one object over the rough horizontal surface until they come to rest again after travelling 30 m.
a. Calculate the speed of combined object directly after the bullet is stuck inside the block.
b. Calculate the lost kinetic energy in this collision.
c. Calculate the coefficient of kinetic friction between the wooden block and the rough surface.
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