Physics · Work, Power & Energy

The correct answer is I, II, and III. Each scenario demonstrates kinetic energy due to the motion of the objects involved:

• Option I: The moving ball possesses kinetic energy, which can break a window upon collision.
• Option II: The hammer's motion imparts kinetic energy, allowing it to drive a nail.
• Option III: The stone, while initially moving upward, possesses kinetic energy. Even though this energy is converted to potential energy at the peak of its trajectory, the initial and final stages involve kinetic energy.

Therefore, all options are correct as they all represent instances of kinetic energy due to motion.

A moving ball can break a glass window: The ball is in motion, which means it has kinetic energy. This energy can be transferred to the window upon impact, potentially breaking it.

A striking hammer can drive a nail: The hammer, in motion, possesses kinetic energy. This energy is transferred to the nail during the strike, driving it into a surface.

A stone thrown upward initially has kinetic energy due to its motion. Although this energy converts to potential energy as the stone reaches its peak, it initially demonstrates kinetic energy.

All three scenarios involve objects in motion, demonstrating kinetic energy. Whether breaking a window, driving a nail, or moving upward, each object is utilizing energy associated with movement.