Which of the following has the greatest momentum?
| a. | a. A turtle with a mass of 270 kg moving at a velocity of 0.5 m/s
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| b. | A rabbit with a mass of 2.5 kg moving at velocity of 7 m/s
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| c. | A dog with a mass of 91 kg moving at a velocity of 1.4 m/s
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| d. | A roadrunner with a mass of 1.8 kg moving at a velocity of 6.7 m/s
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A moderate force will break an egg. However, an egg dropped on the road usually breaks, while one dropped on the grass usually does not break. The reason this happens is because
| a. | the egg dropped on the grass has a greater change in momentum than the egg dropped on the road
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| b. | the egg dropped on the grass has a smaller change in momentum compared to the egg dropped on the road
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| c. | the egg dropped on the grass has a greater time interval for stopping than the egg dropped on the road
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| d. | the egg dropped on the grass has a smaller time interval for stopping compared to the egg dropped on the road
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A 2000 kg car has an impulse of 40 kg*m/s as it comes to a stop. What is its change in momentum?
| a. | 80,000 kg*m/s
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| b. | 2,000 kg*m/s
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| c. | 40 kg*m/s
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| d. | there is not enough information
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