Statement 1: Two spheres undergo a perfectly elastic collision. The kinetic energy of syst
Channel: Doubtnut
Date: 2020-04-05

Statement 1: Two spheres undergo a perfectly elastic collision. The kinetic energy of system of both spheres is always constant. [There is no external force on system of both spheres]. Statement 2: If net external force on a system is zero, the velocity of centre of mass remains constant.