railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Equilibrium and Friction Impact
A body of mass 20 kg is dropped from a height of 2 m. If g is taken as 10 m/sec2, the kinetic energy of the body, just before striking the ground, will be:
1
400 J
2
4 J
3
40 J
4
10 J