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# Sara jumped off her row boat into the lake. As she pushed her body forward the boat moved backwards. Which of Newton’s laws best describes the motion of Sara and her boat?

A Newton’s Third Law of Motion
Explaination
Newton's laws of motion describe the relationship between an object and the forces acting upon it, and its motion in response to these forces. Newton’s First Law of Motion states that objects in motion remain in motion unless acted upon by an outside force; objects at rest stay at rest unless acted upon by an outside force. For example, if a ball is sitting on the floor, it will stay on the floor until someone kicks it. Newton’s Second Law of Motion states that the acceleration of an object is equal to the net force acting on it divided by an object’s mass. For example, when you throw a ball, the harder you throw, the more the ball accelerates. Newton’s Third Law of Motion states that for every action there is an equal and opposite reaction. The same force that Sara used to push forward made the boat move backwards.
B Newton’s Law of Universal Gravitation
C Newton’s First Law of Motion
D Newton’s Second Law of Motion