Multiple choice

Which scientific law explains that inertia causes objects in motion to stay in motion?

  1. Law of Universal Gravitation

  2. Law of Conservation of Mass

  3. Newton's 1st Law of Motion

  4. Newton's 3rd Law of Motion

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C Correct answer
Explanation

Newton's 1st Law, also known as the Law of Inertia, states that an object in motion stays in motion unless acted upon by an external force.