Question

A boy of mass 80 kg is running at 10 mis Find the work done by him​

Answer 1

Hence the work done is 4000 J.

Answer 2

Answer:

Work done is the kinectic energy possessed by the body:

KineticEnergy=

2

mv

2

Given,

Mass m=80kg

Velocity v=10m/s

Kinetic energy K.E=

2

80×10

2

⇒K.E=

2

8000

=4000J

Hence the work done is 4000J

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