A shell of mass 0.01kg is fired from a gun of mass 50kg with a muzzle speed of 100m/s. What is the recoil speed of the g
By conservation of momentum, total momentum before and after firing is zero. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 0.02 m/s as the result, so option D is correct.
Ref: NCERT Class 11 Physics > Chapter 3: Motion in a Straight Line > Topic: Straight Line Motion - Practice Set0