Question

A broom strikes the marble as you are sweeping. Use Newton’s second law to determine what happens to the marble. Use Newton’s third law to describe what interaction there is between the marble and the broom

Answer 1

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Answer 2

Newton's Second Law:
F = ma

In this case, while sweeping, the broom exerted a force on the marble (the mass) and caused it to accelerate.

Newton's Third Law:
Every action has an equal and opposite reaction

It is important to remember that all forces come in pairs. While the broom acted on the marble, the marble also acted on the broom with an equal and opposite force. You may ask, "well why doesn't the broom get accelerated away from the marble at the point of impact?", and the answer is dependent on Newton's Second Law. The mass of the broom is much more than that of the marble, so the acceleration will be much less for the broom than for the marble.