iainn your reasoning. Two skaters-a small girl and a large boy-are initially sta

Question

iainn your reasoning. Two skaters-a small girl and a large boy-are initially standing face-to-face but then push off each other. After they are no longer touching, the girl has more kinetic energy than the boy. Three physics students make the following contentions about the forces the boy and girl exerted on each other: Arianna:I think the boy pushed harder on the girl because he is bigger, so she ended up with more kinetic energy than he did." "I disagree. They pushed equally hard on each other, but the girl moved farther while they were pushing on each other, so she ended up with more kinetic energy" "I think the girl had to push harder to get the boy moving since he is bigger, but that caused her to accelerate more as she recoiled." Boris: Carmen: Which, if any, of these three students do you agree with? Arianna Explain. Boris_ Carmen, None of th em

Explanation / Answer

the answer given by Boris is correct since Newton's third law says that during a push/pull the forces are equal and opposite for the two bodies no matter what is their masses. It can be thought as analogy to a man on a skateboard pushing the wall on his opposite so that he can move backwards but the wall does not move. And the force between them is equal and opposite.

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