Q1. A 10 kg bowling ball moving at 6 m/s can be stopped in either of two ways. The ball might crash into a sil stack of hay and take 0.78 seconds to stop, or it might crash into your mom's sore shin bone and take 0.1 seconds to stop. a. What is the change in momentum in each case? b. What is the impulse on the bowling ball in each case? c. What is the average force on the ball in each case? Q2. In a week prank-gone-bad, the opposing cheerleaders substituted a thin plywood sign for the traditional run-through banner. Suppose that after halftime, Preston (74 kg) ran out at 12 m/s and was slowed to 9 m/s by the sign. a. What impulse did he receive? b. If the painful collision lasted for 0.14 seconds, what average force did he feel? Q3. The force, F, acting on a 2 kg particle varies as shown. a. Find the impulse of the force. b. Find the final velocity of the particle if it is initially at rest. c. Find the final velocity of the particle if it is initially moving along the x axis with a velocity of -2.00 m/s. F (N) 4 3 2 1 0 0 2 3 4. 5 t(s)