Circular Motion

QuizÂ by Nicholas Shovlin

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8 questions
• Q1
1. At the position shown in the diagram, which arrow indicates the direction of the tangential velocity of the cart?
B
A
D
C
30s
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• Q2
2. At the position shown in the diagram, which arrow indicates the direction of the centripetal force of the cart?
A
D
B
C
30s
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• Q3
3. At the position shown in the diagram, which arrow indicates the direction of the centripetal acceleration of the cart?
A
D
B
C
30s
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• Q4
4. The diagram below shows a 5.0-kilogram bucket of water being swung in a horizontal circle of 0.70-meter radius at a constant speed of 2.0 meters per second. The magnitude of the centripetal acceleration on the bucket of water is approximately.
20 m/s/s
14 m/s/s
6 m/s/s
30 m/s/s
30s
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• Q5
5. The diagram below shows a 5.0-kilogram bucket of water being swung in a horizontal circle of 0.70-meter radius at a constant speed of 2.0 meters per second. The magnitude of the centripetal force on the bucket of water is approximately
6 N
20 N
30 N
14 N
30s
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• Q6
6. Examples of centripetal force includes all of the following EXCEPT:
b) gravity of the sun acting to keep Earth in orbit.
d) the force of the air pushing on the wings of a plane as it makes a turn.
c) the friction between a dragster and the track as the car accelerates down the drag strip.
a) the door of a car pushing on a passenger as the car rounds a corner.
30s
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• Q7
7. If an object is accelerated, all of the following may occur EXCEPT:
a) a change of speed.
d) a change of direction and speed.
c) a change of direction.
b) it remains motionless.
30s
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• Q8
8. Determine the acceleration of the car if the car accelerates from 18 m/s to 30 m/s covering a distance of 42 m during the time of acceleration.
1 m/s/s
7 m/s/s
41 m/s/s
21 m/s/s
30s
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