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

Rahul raises a ball of mass 1 kg through a height of 2 m. The work done by Rahul and the force of gravity are respectively (g = 10 m/s²)

1

20 J, 20 J

2

-20 J, -20 J

3

20 J, -20 J

4

-20 J, 20 J

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