Question

A body of mass 2kg is thworn up with 20m/s after 2 second kinetic energy

Answer 1

m=20kg , u=20m/s , a=-10m/s^2 , t=2s

v=u+at v=20+(10)(2)=20+20=40m/s

K.E=1/2mv^2=1/2(2)(40)^2=1600J