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➡️Define 1st law of motion.
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Answer:
NEWTON'S FIRST LAW OF MOTION states that a body at rest will remain at rest and body in motion will remain in motion until and unless am external force applied on it.
Answer:
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Isaac Newton's first law of motion, also known as the law of inertia, states that an object at rest will stay at rest and an object in motion will stay in motion with the same speed and direction unless acted upon by unbalanced force. In other words, if no force acts on an object it will maintain a constant velocity (for an object at rest that velocity is equal to zero). With the first law of motion, Newton established the existence of a frame of reference for which his other laws of motion are applicable, called the inertial frame of reference. An inertial frame of reference is one in which the observer is moving at constant velocity (which includes being stationary).
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