<human>:  What new laws of motion were discovered by Isaac Newton?
<bot>: The three laws of motion discovered by Isaac Newton are the Law of Inertia, the Law of Force and Acceleration, and the Law of Action and Reaction. The Law of Inertia states that a body at rest remains at rest and a body in motion continues in motion in a straight line, unless acted upon by an external force. The Law of Force and Acceleration states that the acceleration of a body is directly proportional to the force applied to it, and inversely proportional to its mass. The Law of Action and Reaction states that for every action there is an equal and opposite reaction.