Physics equations/07-Work and Energy/Q:cart2/Testbank

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a07energy_cart2_1_v1

1. The spring constant is 561N/m, and the initial compression is 0.12m. What is the mass if the cart reaches a height of 1.38m, before coming to rest?
Roller coaster energy conservation.jpg
a) 0.271 kg
b) 0.284 kg
c) 0.299 kg
d) 0.314 kg
e) 0.329 kg

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a07energy_cart2_2_v1

1. The cart has a mass of 3.03kg. It is moving at a speed of 2.10m/s, when it is at a height of 2.45m. If the spring constant was 572N/m, what was the initial compression?
Roller coaster energy conservation.jpg
a) 0.49 m
b) 0.53 m
c) 0.56 m
d) 0.60 m
e) 0.65 m

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a07energy_cart2_3_v1

1. You are riding a bicycle on a flat road. Assume no friction or air drag, and that you are coasting. Your speed is 4.9m/s, when you encounter a hill of height 1.14m. What is your speed at the top of the hill?

a) 1.149 m/s
b) 1.218 m/s
c) 1.291 m/s
d) 1.368 m/s
e) 1.450 m/s

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