Question

a moving body weighing 400 Newton possesses 500 joule of kinetic energy. calculate the velocity with which the body is moving.(take g =9.8m/s)

Answer 1

mg=400 N

so, m=400/9.8

here, 1/2 mv^2=500

so, v= {(500 x 2 x 9.80)/400}^1/2