Problem 5 In a ballistic pendulum experiment. projectile 1 results in a maximum height, h, of the pendulum equal to 2.6 cm. A second projectile (of the same mass) causes the pendulum to swing twice as high, 5.2 cm. The second projectile was how many times faster than the first? Problem 6 TheCenter of Mass of an empty 1500 kg car is 2.50 m behind the front of the car. How far from the front of the car will the Center of Mass be when two people sit in the front seat 2.65 m from the front of the car, and three people sit in the back seat 3.75 rn from the front? Assume that each person has a mass of 74.5 kg. Problem 7 Indicate whether the following statements are true for both inelastic collisions and elastic collisions. a] Momentum and kinetic energy are conserved. b) Momentum is conserved. c) Momentum and potential energy are conserved. d) Kinetic energy is conserved