In an experiment to find out the muzzle velocity of your BB gun, you fire a BB straight up into a wooden block of mass 0.050 kg. The BB has a mass of 0.0020 kg. The BB embeds itself in the block, and the BB+block rises to a maximum height of 0.94 m off the table.
(a) What was the kinetic energy of the BB+block just after the BB hit the block?
(b) How fast was the BB+block going just after the BB hit the block?
(c) How fast was the BB going just before the collision?