A ball of mass 0.5 kg thrown upwards reaches a maximum height of 5m.Calculate the work done by the force of gravity during this vertical displacement considering the value of `g =10m//s^(2)`.

Explanation

Force of gravity acting on the ball,
`F = mg = 0.5 xx 10 = 5N`
Displacement of the ball, S = 5 m
The force and displacement are in opposite directions. Hence work done bythe force of gravity on the ball is negative.
`W = -FS`
` = -5 xx 5`
` = -25J`