2,3 / 2,4 Reading Quiz - Work Done, PE Ke, Power, Circular Motion
10 Questions
| Attempts: 127
2,3 / 2,4 Reading Quiz - work done, PE KE, power, circular motion
Questions and Answers
- 1.20N pushes a box 6m in 3 seconds. What is the work done by the force?
- A.
360J
- B.
120J
- C.
60J
- D.
18J
- 2.What is the average power used in moving an object with 20N for a distance of 6m in 3seconds?
- A.
3.33W
- B.
2W
- C.
6.66W
- D.
40W
- 3.What aspect of a force distance graph give you the work done?
- A.
The gradient,
- B.
The area
- C.
Half the area
- D.
The second derivative
- 4.2Kg mass is thrown with a velocity of 5m/s. What is its KE?
- A.
5J
- B.
10J
- C.
25J
- D.
50J
- 5.A 2Kg mass is given 100J of KE. How high will it reach if it is thrown vertically upwards?
- A.
2.5m
- B.
5m
- C.
25m
- D.
50m
- 6.What is an elastic collision?
- A.
Where momentum is conserved
- B.
Where energy is conserved
- C.
Where kinetic energy is conserved
- D.
Where potential energy is conserved
- 7.A speed boat is able to travel with a maximum velocity of 20m/s. The power rating of the engine is 2000W. What is the sum of the frictional forces on the boat?
- A.
40,000 N
- B.
200 N
- C.
100 N
- D.
50 N
- 8.What is the acceleration of a 40Kg boy sitting on the edge of a merry-go-round. The tangetial speed is 2m/s. The diameter of the merry go round is 8m. What is the acceleration he experiences.
- A.
0.5 m/s2
- B.
1m/s2
- C.
2m/s2
- D.
4m/s2
- 9.When a bucket is being swung round in a circle in a verticle plane, what are the forces acting on the bucket when it is at the lowest point?
- A.
Weight and centripetal force,
- B.
Tension and centripetal force and weight
- C.
Weight and tension
- D.
Tension and centripetal force
- 10.Which areas of this work done, KE, PE, power and circular motion do you have the most difficult with? Can you formulate a question?
- 11.There is no video available yet, please upload the video
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