How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s-1 to catch the bus?

How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s^-1 to catch the bus?

Numerical

Mass of box=20 kg

Work done, Kinetic energy of man

`= 1/2 xx "mass" xx ("Velocity")^2`

`= 1/2 xx 20 xx (3)^2`

`= 1/2 xx 20 xx 9` = 90 J

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Chapter 2: Work, Energy and Power - EXERCISE - 2(B) [Page 42]

Chapter 2 Work, Energy and Power
EXERCISE - 2(B) | Q 21. (b) | Page 42

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