2854030
Description
Quiz by Peter Hoskins, updated more than 1 year ago
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Created by Matthew T
almost 9 years ago
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Copied by Peter Hoskins
almost 9 years ago
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Question 1
Question
True or false? Work is done when an object is moved by a force.
Answer
- True
- False
Question 2
Question
True or false? Work uses a different SI unit to energy.
Answer
- True
- False
Question 3
Question
True or false? Gravitational potential energy is energy stored in an object because of its position in the Earth's gravitational field.
Answer
- True
- False
Question 4
Question
What is the gravitational potential energy of an object of 0.5kg mass if it is lifted by 3m?
Answer
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1.5J
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3J
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15J
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10.5J
Question 5
Question
What is the power developed of an object which, when lifted, gains 60J in 10s?
Answer
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600W
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6W
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60W
Question 6
Question
True or false? Kinetic energy is the energy of an object when it is stationary.
Answer
- True
- False
Question 7
Question
True or false? Momentum is a scalar quantity.
Answer
- True
- False
Question 8
Question
True or false? In a closed system, the total momentum before an event is equal to the total momentum after the event.
Answer
- True
- False
Question 9
Question
Trolley A, 6kg, is travelling in one direction at 4m/s. Trolley B, 7kg, is travelling in the other direction at 3m/s. The two trolleys stick together and move off. What is the velocity of the two trolleys?
Answer
-
2.5m/s
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3m/s
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3.5m/s
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4m/s
Question 10
Question
True or false? In an explosion, the total momentum is zero.
Answer
- True
- False
Question 11
Question
True or false? If, in an explosion, two pieces of debris move apart, they will not move with equal and opposite momentum.
Answer
- True
- False
Question 12
Question
True or false? If the impact time is increased, the impact force will be increased.
Answer
- True
- False
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