Question

For a body thrown vertically upwards, its direction of motion changes at the point where its total mechanical energy is:

• A. greater than the potential energy
• B. less than the potential energy
• C. equal to the potential energy
• D. zero

Answer 1

Answer: (C)

equal to the potential energy

When, body reverses direction, its kinetic energy is zero (velocity is zero). Therefore, the total mechanical energy becomes equal to its potential energy (Total mechanical energy$=KE+PE$).