1.Aball with a mass of till) 9 hits a 5.0 kg block ofwood tied to a string, as shown. You may assume that there is no friction from the string. The ball hits the block in a completely inelastic collision, causing the block to rise to a maximum height ofi) cm. Find the initial horizontal speed of the ball. You may assume that the string is very long. firsas...|1are..I95.Jan.9..sts.sr.imier1 2. A 1.2 kg cart moving at 6.0 ITIIlS [E] collides with a stationary 1.8 kg cart. The headon collision is completely elastic and is cushioned by a spring. a. Find the velocity of each cart alter the collision. b. The maximum compression ofthe spring during the oollision is 2.0 cm. Find the spring constant. 3. A050 kg magnetic puck moving at 4.0 lTlJlS [E] is sliding on a frictionless horizontal air table. It undergoes an elastic head-on collision with another magnetic puck of mass 0.90 kg, moving at 3.0 mJ's ['IN]. Find the velocity ofeach puck after the collision. F' 4.Oms[Ej~ Faumlwl