6 A ball is thrown straight up At what point does the ball h

6. A ball is thrown straight up. At what point does the ball have the most energy? Ignore air resistance. (a) At the highest point of its path. (b) When it is first thrown. (c) Just before it hits the ground. (d) When the ball is halfway to the highest point of its 13 path. (e) Everywhere; the energy of the ball is the same at all of these points.

Solution

Total energy of the ball will remain the same everywhere. At different positions, kinetic and potential energies will be different but net energy (Kinetic energy + Potential energy) will be a constant.

Hence option (e) is correct. Energy of the ball is the same at all of the points.