state gov UP Police Head Operator (Radio Cadre) Mock Test Physics Work Power and Energy Kinetic Energy
A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1.05 kJ of energy. The initial velocity of the shell is -
1
40 ms–1
2
120 ms–1
3
100 ms–1
4
80 ms–1