Question

review it! lenore is training for a bodybuilder competition. one of her exercises is lifting heavy weights. which of the following describes the energy the weights have during the workout? when the weight is dropping toward the floor, it has only potential (stored)energy. just before the weight is lifted off the floor, it has kinetic energy (energy of motion). the weight has kinetic (energy of motion) and potential energy (stored energy) when it is sitting on the floor. the weight has kinetic energy (energy of motion) when it is moving up in the air. the weight has kinetic energy (energy of motion) when it is moving up in the air.

Explanation:

Kinetic energy is the energy of motion. Potential energy is stored energy. When a weight is moving (such as moving up in the air), it has kinetic energy. When it is stationary on the floor just before being lifted, it has potential energy. When dropping, it has both kinetic (due to motion) and is losing potential energy (as it gets closer to the ground).

Answer:

The weight has kinetic (energy of motion) when it is moving up in the air.