Certain force acting on a 20 kg mass changes its velocity from 5 m s-1 to 2 m s-1. Calculate the work done by the force.
Energy consumed = 250 units
= 250 kWh
We know that,
1 kilowatt-hour = 3.6 × 106 J
250 kilowatt-hours = 3.6 × 106 × 250
= 9 × 108 J
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