Q. A 3.00 kg block of wood sits on a table. A 3.00 g bullet, fired horizontally at a speed of 550 m/s, goes completely through the block, emerging at the speed of 190 m/s. What is the speed of the block immediately after bullet exits?
Q. A 60 kg football player travelling 4.90 m/s is stopped in 1.10 s by a tackler. What is the original kinetic energy of player?