SPEED AND VELOCITY WORK POWER AND ENERGY - Practice Mode

1) What is the equivalent unit for 1 horse power in metric system?

75 kg.m/sec 76 kg.m/sec 77 kg.m/sec 78 kg.m/sec

Correct Answer: 75 kg.m/sec

2) What is the formula for potential energy?

mgh joule mgh<sup>2</sup> joule 1/2 mgh joule 2/3 mgh joule

Correct Answer: mgh joule

3) What is the formula for kinetic energy?

(1/2) mv joule (1/2) mv<sup>2</sup> joule (2/3) mv<sup>2</sup> joule (2/3) mv joule

Correct Answer: (1/2) mv<sup>2</sup> joule

Explanation:

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4) How much work done in one hour, if a pump can raise 100 liters of water through a height of 200 meters in one minutes?

12 x 104 kg meter 12 x 105 kg meter 12 x 106 kg meter 12 x 107 kg meter

Correct Answer: 12 x 105 kg meter

5) What is the work done, if a force of 250 newtons acted upon a body and the body has been moved through a distance of 15 metres?

3720 Joules 3730 Joules 3740 Joules 3750 Joules

Correct Answer: 3750 Joules

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