Question

a body of mass 4 kg is thrown up with a speed of 30m/s calculate KINETIC ENERGY of body and POTENTIAL ENERGY at top

Answer 1

Kinetic Energy at the instant of throwing, $K=\frac{1}{2}mv^{2}=\frac{1}{2}(4)(30)^{2}J=1800J.$
Potential Energy at the topmost point, $U=1800J.$

Answer 2

K.E is = 1800 J
P.E at top= 1800J