Tom and his little sister are enjoying an afternoon at the ice rink. They playfully place their hands together and push against each other. Tom's mass is 74 kg and his little sister's mass is 15 kg. (a) Which of the following statements is correct? The force experienced by the sister is less than the force experienced by Tom.They both experience the same force. The force experienced by Tom is less than the force experienced by his sister. (b) Which of the following statements is correct? Tom's acceleration is more than the sister's acceleration.They both have the same acceleration. Tom's acceleration is less than the sister's acceleration. (c)

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”