SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A 70.0 kg runner is travelling at 5.05 m/s. What is their kinetic energy?
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892 J
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177J
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892 KJ
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3.47x103 J
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Explanation:
Detailed explanation-1: -Kinetic energy is also generated by the human body when it is in motion. For instance, a runner builds up kinetic energy that starts in the feet and legs and is generally converted to heat. That is why runners (and other athletes) start to feel hot when they are running or exercising.
Detailed explanation-2: -The kinetic energy of an object can be calculated by the equation KE=1/2 mv^2 A comet with a mass of 7.85 × 10^11 kg is moving with a velocity of 25, 000 m/s will have kinetic energy = 1/2 x 7.85 x 10^11 x (25000)^2 = 2.45 x 10^20 Joules.
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