Question

if the speed of the body changes from 3 metre per second to 5 metre per second calculate the work done by the body given that the mass of the body is 50 kg​

Answer 1

Explanation:

m = 50 lg

u = 3 m/s

v = 5 m/s

K.E. = W = m(v²-u²)

W = 50×(5²-3²) = 50×(25-9) = 50×16 = 800J