3 The FIRST LAW OF MOTION: Also known as LAW OF INERTIA An object at rest remains at rest. An object in motion remains in motion at a constant speed and in a straight line (constant velocity) unless acted upon by an UNBALANCED force.
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5 Ping pong ball Bowling ball
Remember: 6 “ Law of Inertia states that an object at rest will remain at rest and an object in motion will continue to move in uniform motion unless acted upon by unbalanced force.”