Q. A 3.0 block of wood sits on a table. A 3 bullet, fired horizontally at a speed of 440, goes completely by the block, emerging at a speed of 180.What is the speed of the block immediately after the bullet exits?
Q. A 13-kg runaway grocery cart runs into a spring with spring constant 260 N/m and compresses it by 62-cm. What was the speed of the cart just before it hit the spring?