Memorize Newton's 3 Laws of Motion
1. (The Law of Inertia) A body at rest remains at rest and a body in motion remains in motion with a constant speed and in a straight line, unless acted upon by an outside force.
2. The acceleration of an object is proportional to the force acting upon it and is directed in the direction of the force. That is, F=ma.
3. To every action there is an equal and opposite reaction.
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