Momentum, p, is the product of mv. The mass and velocity must be put in standard SI units. 1. What is the momentum of a 70 kg runner traveling at 10 m/s? 2. What is the momentum of a 800 kg car traveling at 20 m/s? 3. What is the momentum of a 47 gram tennis ball that is traveling at 40 m/s? 4. What is the momentum of a 120 pound bicyclist that is traveling at 25 mph? 5. What is the momentum of a 1500 pound car that is traveling 5 mph? 6. What is the speed of a 0.050 kg bullet that is to have the same momentum as the car in problem #5? 7. What is the speed of a 60 kg runner that travels with the same momentum as the car in problem #5? (Answer in m/s and mph)- B. What is the momentum of a 453 gram football that is thrown with a speed of 30 m/s? 9. How fast must a 150 g baseball be traveling to have the same momentum as the football in problem #8? (Answer in m/s and mph) Changes in momentum, Ap. AP = mvfinal - MVinitial- Direction counts! if the objects switches directions then the Ap is added. 10. What is the change in momentum of a 950 kg car that travels from 40 m/s to 31 m/s? 11. What is the change in momentum of a 40 kg runner that travels from 5 m/s to 11 m/s? 12. A mud blob, 0.350 kg, is thrown at a wall at 10 m/s. The blob sticks to the wall. What is the change in momentum of the blob? 13. A 0.095 kg tennis ball is traveling 40 m/s when is bounces of a wall and travels in the opposite direction it came from. The bounced leaving the wall with a speed of 30 m/s. What is the change in momentum of the ball? 14. A baseball, 167 grams, is pitched at 50 m/'s when is hit by the batter. The ball travels in the opposite direction it was thrown from with a speed of 70 m/s. What is the change in momentum of the baseball? 15. In a football game a 70 kg player is running at 10 m/s when he is hit by another player. When he is hit by the other player he bounces off in the opposite direction at 5 m/s. What is the players change in momentum? IMPULSE (J = Ft = AP) 16. If the runner, in #10, took 30 seconds to change its speed, then what force caused the change? 17. If the car, in #11, took 2 minutes to change its speed, then what force caused the change? 18. How much time was taken to stop the blob in #12 if the mud blob was stopped by 400 N force