Question 5 a) Determine the momentum of each of the following: 60kg halfback (rugby player) moving eastward at 9m/s 1000kg car moving northward at 20m/s • 40kg student moving southward at

2m/s b) An elastic collision occurs in one dimension, in which a 10kg block traveling at 5m/s collides with a 5kg block traveling at 3m/s in the same direction. What are the velocities of the two blocks immediately after the collision? c) An inelastic collision occurs in one dimension, in which a 10kg block traveling at 5m/s collides with a 5kg block traveling at 3m/s in the same direction, and they stick together. What are the velocities of the blocks immediately after the collision? d) The diagram on the next page depicts the before and after collision speeds of a vehicle that undergoes a head-on collision with a wall. In Case A, the vehicle bounces off the wall. In Case B, the vehicle crumples up and sticks to the wall. • In which case (A or B) is the change in velocity the greatest? • In which case (A or B) is the change in momentum the greatest? • In which case (A or B) is the impulse the greatest? In which case (A or B) is the force that acts upon the vehicle the greatest (assume contact times are the same in both cases)? 3/nCase A Vi = 5 m/s Vf= 4 m/s Case B Vi = 5 m/s Vf=0 m/s e) When a figure skater makes a jump, he increases his rotation speed by pulling together his arms and legs. This reduces his rotational inertia causing him to spin faster. If the initial spin rate of a figure skater is 1RPM and he decreases his rotational inertia by half during the spin, what is his final spin rate? f) A 1.5kg cannon is mounted on top of a 2.0kg cart and loaded with a 52.7g ball. The cannon, cart, and ball are moving forward with a speed of 1.27m/s. The cannon is ignited and launches a 52.7g ball forward with a speed of 75m/s. Determine the post-explosion velocity of the cannon and cart.