Question

The mass of a body is 20 kg. It is moving at a speed of 10 mnat kinetic energy?​

Answer 1

Answer:

m=20 kg

s=10 Ms-1

so the total answer is 10ms-1

Answer 2

800 Joule

As there is no external  non-conservative force on the system (both masses altogether) the linear momentum should

be conserved.