The final will have questions from all 4 units (momentum, energy, internal energy of Earth, and external energy of Earth.) Many of the questions will be identical to or very much like those on all the bellringers, exit slips, quizzes, practices, exams, and on line practice exams. Previous on line practice exams will be active starting 5/19 until 5/25. There will be about 50 multiple choice questions and about 2 constructed response questions. For your convenience, below, is a list of many problems seen previously in the momentum unit. All these questions were previously solved and the answers should be on your bellringers, exit slips, quizzes, practices, and on line practice exams. You are allowed to bring a 5x7 inch index card with notes on both sides or an 8.5x11 inch paper sheet with notes on one side to use during the test and it needs to be turned in with your test.
Integrated Science 2 Spring Final Momentum Study Guide 1. List the factors that are needed to determine/calculate the amount of momentum for an object. 2. How is momentum different from inertia? 3. How is momentum like inertia? 4. How does momentum change if velocity changes? 5. Calculate the momentum of a 60kg person moving at 8m/s. 6. Calculate the speed of a 4000kg vehicle that has 80000kgm/s of momentum. 7. Calculate the mass of an asteroid moving at 2500m/s when its momentum is 125000kgm/s. 8. Calculate the momentum of a 35kg child riding a 7kg bicycle at 4m/s. 9. A 100,000kg asteroid moving at 2000m/s collides with a stationary 200,000kg asteroid. Calculate their speed after the collision if they are stuck together. 10. Johnnetta throws a 0.5kg ball of clay east with a momentum of 15kgm/s at an approaching car. It sticks to the windshield of the 1000kg car coasting to the west at a speed of 2m/s towards her. Calculate the momentum of the car with the clay on it. 11. Calculate the velocity of the car in #11 after the clay sticks to it. 12. You are at a bowling alley and see an 8kg bowling ball moving at 8m/s colliding with a 1.5kg bowling pin. The pin gets knocked back at 14m/s. Calculate the momentum of the bowling ball after the collision. 13. Calculate the speed of the bowling ball after the collision in problem #12. 14. A 0.01kg marble moving at 1m/s collides with an identical stationary marble and they do not stick together. The stationary marble moves at 1m/s after the collision. Calculate the speed of the originally moving marble after the collision. 15. Define elastic collision. 16. Define inelastic collision. 17. Calculate the velocity of a snake moving with a momentum of 20kgm/s and a mass of 30kg. 18. Calculate the momentum of a marble with a mass of 2kg and a velocity of 6m/s. 19. Calculate the mass of a marble with a momentum of 20kgm/s and a velocity of 4m/s. 20. Define conservation of momentum. 21. A 200kg motorcycle moving at 25m/s crashes head on into a 2000kg car coming from the other direction at 25m/s. It is an inelastic collision. Calculate a) the momentum of the motorcycle b) the momentum of the car c) the velocity of the motorcycle after the collision 22. An object moving at constant speed suddenly speeds up until its speed is twice what it was. What has happened to its momentum? a) It is twice as much b) It is four times as much c) It is half as much d) It did not change 23. An object suddenly loses half its momentum. What happened to its speed? a) It is now twice as fast b) It is now half as fast c) It is now four times as fast d) It did not change 24. What is the mass of object A if it has the same momentum as object B and object B has a speed ¼ as fast as object A? a) Same mass as object B b) Half the mass of object B c) Twice the mass of object B d) Four times the mass of object B e) ¼ the mass of object B 25. A 1000000kg asteroid moving at 2000m/s collides with a stationary 3000000kg asteroid. Afterwards, when they are stuck together, their speed is most likely to be a) 0m/s b) 500m/s c) 10000m/s d) 20000m/s e) 30000m/s 26. The Joker throws an axe at Batman. Batman throws a much lighter batarang at the axe. The two objects collide, stick together, stop, and fall to the ground. What must be true? a) The batarang has the same mass as the axe b) The axe had the same speed as the batarang c) The batarang had a much lower speed than the axe d) The axe had a much lower speed than the batarang 27. Marsha is driving her car on an icy road when it loses traction (no more friction on the tires) and slides into the rear of an identical car waiting at the stop light in front of her. Her car stops after hitting the other car. Both cars are not damaged but the other slides freely on the ice after being hit. Which must be true? a) The other car slides faster than Marsha’s car before collision b) The other car slides slower than Marsha’s car before collision c) The other car slides as fast as Marsha’s car before collision d) The other car slides with zero speed 28. Two moving vehicles crash head on into each other. Vehicle A was moving north and Vehicle B was moving south. After the crash, they both move south. What must be true before the collision? a) Vehicle A had more momentum than vehicle B b) Vehicle B had more momentum than vehicle A c) Vehicle A had same momentum as vehicle B d) There is not enough information to determine which had more momentum 29. A 1kg ball moving in a positive direction at 5m/s hits a wall and bounces back at 5m/s. What is the change in momentum of the ball? a) Zero b) 10m/s c) 10kgm/s d) -5kgm/s e) -10kgm/s 30. Kobie was floating motionless in space when he throws a 2kg ball in front of him at 4m/s. What is true about his momentum compared to ball’s momentum? a) Same magnitude and direction b) Same magnitude and in opposite direction c) His higher mass means lower magnitude and in opposite direction d) His higher mass means lower magnitude e) It did not change 31. Aaron Judge swings his bat and hits a stationary 0.145kg baseball so it leaves his bat traveling at 50m/s. If the bat and ball were touching for only 0.001sec, how much force was acting on the ball? a) 7250N b) 145N c) 0.007N d) 0N e) 0.345N 32. Which of the following is true for an object that is moving? a) Momentum increases as mass decreases b) Mass decreases as velocity increases c) Gravitational force increases as velocity increases d) Momentum decreases as velocity decreases e) Velocity increases as mass increases 33. How is momentum different from inertia? a) An object’s momentum increases when its inertia decreases b) An object’s momentum is independent of inertia c) An object’s momentum increases when its inertia increases d) An object has momentum but not inertia 34. Which is true? a) All objects have both inertia and momentum b) All objects have inertia but no momentum c) All objects have momentum but no inertia d) An object can have inertia and no momentum e) An object can have momentum and no inertia 35. A car crashes into a wall and comes to a stop. Which is true about the crash? a) Momentum increased as the car comes to a stop b) The change in momentum is greater than the impulse c) The change in speed is equal to the impulse d) The force on the car multiplied by time it acts is equal to the change in momentum 36. During the Winter Olympics curling competition, Debbie McCormick releases her stone and it bumps a heavier stationary stone and loses half its momentum. What must now be true? a) The other stone is still stationary b) Her stone is moving backwards c) Her stone is now moving at half the pre collision speed d) The other stone is now moving as fast as her stone after collision e) The other stone is now moving as fast as her stone before collision 37. Which is a characteristic of collisions? a) All collisions are elastic b) The objects in an elastic collision change shape permanently c) In an inelastic collision, momentum is not conserved d) In an elastic collision, the objects don’t stick together 38. Which is a characteristic of conservation of momentum? a) Every object must not change its mass b) Total mass in a system can change if one object gives it to another c) Velocity of an object increases if its mass also increases d) Total momentum of a system doesn’t change after a collision e) Total momentum of a system increases after a collision 39. Which is a characteristic of impulse? a) Impulse is conserved b) The change in momentum is the same as the impulse c) For a given impulse, the force increases if the time it acts increases d) In an elastic collision, there is no impulse 40. Mordecai throws a 20kg ball of clay east with a momentum of 200kgm/s at a 2000kg car approaching from the east. It sticks to the windshield of the car coasting to the west at a speed of 2m/s towards him. Calculate the following: a) Velocity of the ball of clay before hitting car b) Momentum of the car before clay hit it c) Momentum of the car with the clay on it d) Velocity of the car after the clay sticks to it 41. Brie is at a bowling alley and sees an 8kg bowling ball moving at 8m/s colliding with a 1.5kg bowling pin. The pin gets knocked back at 14m/s. Calculate the following: a) momentum of the bowling ball before the collision b) momentum of the pin before the collision c) momentum of the pin after the collision d) momentum of the ball after the collision 42. A Hydra agent attacks Captain America by swinging a 3kg hammer at 9m/s. Captain America’s shield blocks the hammer and the hammer bounces back at the Hydra agent at the same speed. The force acting was 5400N. Calculate the following: a) Momentum of hammer before hitting shield b) Momentum of the hammer when moving away from shield c) The change in momentum for the hammer d) The impulse on the hammer e) The amount of time the hammer and shield were touching 43. Abbie is playing with marbles and lets a 0.01kg red marble moving at 1m/s collide with an identical but green stationary marble. They do not stick together. After the collision, the green marble moves at 1m/s in same direction that the red marble was moving before the collision. Calculate the following: a) Momentum of red marble before collision b) Momentum of green marble before collision c) Momentum of the 2 marble system before collision d) Momentum of green marble after collision e) Momentum of red marble after collision f) Speed of the red marble after the collision
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