SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Calculate the work needed to raise a 3 kg cat up to a height of 4 m.
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12 J
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0 J
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120 J
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1.22 J
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Explanation:
Detailed explanation-1: -According to the Work-Energy theorem or the relation between Kinetic energy and Work done-the work done on an object is the change in its kinetic energy. Hence, the work to be done to increase the velocity of a car from 30km/h to 60km/h is 156250 joule, if the mass of the car is 1500 kg.
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