railway RRB Technician Grade 1 Mock Test 2024 Physics Work Power and Energy Work done

A boy is throws a ball by a force of 30 N. Another boy, standing at 20 m away, catches it. The work done on the ball is

1
​6 × 108 erg
2
6 × 109 erg
3
​6 × 107 erg
4
​6 × 1010 erg
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