According to the Newton’s Third Law of Motion, what happens to a stationary rowing boat when a sailor jumps forward from it?
The boat moves backward due to an equal and opposite reaction force
Newton’s third law of motion states that for every action there is an equal and opposite reaction. When the sailor pushes his feet against the boat to jump forward, he exerts a force on the boat in the forward direction.
The boat, in turn, exerts an equal force on the sailor in the backward direction. Since the water offers relatively little resistance to a stationary boat, the reaction force pushes the boat backward. It cannot stay still (a real force acted on it), it cannot go forward with the sailor (the forces are opposite), and the direction is set by the law, not by random water resistance.
Hence, the answer is The boat moves backward due to an equal and opposite reaction force.
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