Question

a man of mass 50kg ascends a flight of stairs 5m high in 5seconds .if the acceleration due to gravity is10m/s,the power expended is

Answer 1

power = work/time
work = force * distance
force = mass * acceleration
so, the power expended is
50 kg * 10 m/s^2 * 5m / 5s = 500W

Answer 2

Correct

Answer 3

ajibade

Answer 4

Thanks u