Question

A man throws a ball weighing 500g vertically upwards with a speed of 10m/s . calculate the amount of work done by force of gravity in 1 sec

Answer 1

s = ut + 1/2 × g t×t
s = 10(1) - 1/2 × 10 × 1

s = 5 m

w = fs
= mas
= 0.5 * 10 * 5
= 25 J