Two students on rollerskates stand face-to-face, then push each other away. One student has a mass of 90.0kg; the other has a mass of 60.0kg a) find the ratio of the students' velocities just after their hands lose contact. b) which student has the greater speed? c) which student pushed harder?

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: