JEE Main Physics question
A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force on the body is [SCRA 1994]
Answer: (D)
Solution
Since the body moves in the same direction as gravity, the work done is positive: W = mgh = 10 × 9.8 × 10 = 980 J.