Question

choose the correct answer. a weightlifter lifts weights above his head. what is the reaction force? the weights push up on the weightlifter. the weightlifter pushes down on the weights. the weights push down on the weightlifter.

Explanation:

According to Newton's Third Law (action - reaction), if the weightlifter exerts an upward force (action) on the weights, the reaction force is the weights exerting a downward force on the weightlifter. The first option has the wrong direction of the force from the weights, and the second option is the action force from the weightlifter, not the reaction.

Answer:

The weights push down on the weightlifter.