4. A 0.62 kg soccer ball is traveling towards a player at 18 m/s East when they head the ball at 16 m/s West. The ball is in contact with the player's head for 0.12 s. a. Determine the impulse of the ball. b. How much force is exerted on the ball? c. How much force is exerted on the player's head? 5. A 2300kg Ford F-150 has an engine that can exert 380 horsepower, which is approximately 283 000 W. How long would you expect it to reach a speed of 100. km/h