A person kicks a soccer ball to score a goal. The mass of the soccer ball is 0.5 kg, and the mass of the foot-leg system is 2 kg. The soccer ball is initially at rest, and after the kick it travels at 30 m/s. The coefficient of restitution between the ball and the foot is 0.75. 5. How fast was the foot traveling when the person kicked the ball? 6. What is the total impulse exerted by the foot on the ball? 7. If the time of contact between the foot and the ball is 0.005s, what is the average force exerted by the foot on the ball