SSC MTS EXAM

Detailed explanation-1: -If kinetic energy increases, velocity increases. If kinetic energy decreases, so does velocity. Potential energy also changes as kinetic energy changes, but inversely. So potential energy decreases if kinetic energy increases and vice versa.

Detailed explanation-2: -If the speed is halved (keeping the mass same), the kinetic energy decreases, it becomes one-fourth (since kinetic energy is proportional to the square of velocity).

Detailed explanation-3: -The amount of kinetic energy possessed by an object depends directly upon the square of speed (or velocity). An increase in speed will increase the kinetic energy. In fact, an increase in the speed by a factor of 2 will increase the kinetic energy by a factor of 22 or 4.