Momentum

1. Momentum

2. Qualitatively Speaking Crazy Random Define This Full Impulse Conservation $200 $200 $200 $200 $200 $400 $400 $400 $400 $400 $600 $600 $600 $600 $600 $800 $800 $800 $800 $800 $1000 $1000 $1000 $1000 $1000

3. 200 What is one word that describes an inelastic collision? Back Answer: stick

4. 400 What is momentum, mathematically speaking? Back Answer: mass x velocity

5. 600 What is meant by “conservation” when it comes to science? Answer: that the property is neither created nor destroyed Back

6. 800 What are two units that can be used for momentum? Back Answer: kg m/s and N s

7. 1000 What are two equations that can be used to calculate impulse? Back Answer: J =Δp and J = F x t

8. 200 In order to decrease the force of impact on an object in a collision that is initially travelling at 35 mi/hr, what must be done? Back Answer: increase the impact time

9. 400 If two objects are moving in the same direction and have the same mass but different momentums, what must be true about the two objects’ motions? Answer: they have different velocities Back

10. 600 If an astronaut at rest throws a baseball, what is the total momentum of the baseball and the astronaut after the throw? Back Answer: zero

11. 800 If a very large object travelling at 35 mi/hr hits a very small, stationary object, describe the change in motion of each object after the collision. Answer: large object slows down but continues in the same direction; small object speeds up in the positive direction. Back

12. 1000 A 0.12 kg billiard ball travelling at 3 m/s hits another 0.12 kg billiard ball that is at rest. After the collision, the first ball stops. What is the velocity of the second ball? Back Answer: 3 m/s

13. 200 What is the definition of impulse? Back Answer: change in momentum

14. 400 When a boxer hits an opponent, what is it advantageous to make contact with the opponent over a small amount of time? Back Answer: to increase force

15. 600 What is the impulse on a 850 kg car if it was travelling at 21 m/s and then hits a wall and stops? Back Answer: -18,000 kg m/s

16. 800 What force will it take to stop a 850 kg car travelling at 21 m/s in 2.0 s? Back Answer: -8900 N

17. 1000 How do airbags affect the impulse of a passenger in a collision? Back Answer: no effect

18. 200 When a stationary bomb explodes, what is the total momentum of all the pieces after the explosion? Back Answer: 0 kg m/s

19. 400 If a 90.0 kg hockey player travelling at 1.30 m/s left hits a 120 kg hockey player travelling at 0.98 m/s right, what will be the velocity of the first hockey player after the collision? Back Answer: 0.00 m/s

20. 600 When a 0.25 kg force cart travelling at 1.3 m/s hits a 0.50 kg force cart travelling at 0.20 m/s inelastically, what will be the velocity of the second force cart after the collision? Back Answer: 0.57 m/s

21. 800 A 0.15 kg cue ball travelling at 9.5 m/s hits the rack of balls. The cue ball stops, but all the other balls start moving in every direction with various velocities. What is the sum of the other balls’ momenta? Back Answer: 1.4 kg m/s

22. 1000 A force of 4.5 N is applied to a 0.15 kg stationary force cart for 0.50 s. The force cart then hits a second force cart inelastically with a mass of 0.35 kg. What is the velocity of the two force carts after the collision? Back Answer: 4.5 m/s

23. 200 What Texas governor is running for president? Back Answer: Rick Perry

24. 400 What popular Broncos quarterback will probably not be starting next week? Back Answer: Tebow

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