A 40 kg girl skating at 7 ms collides with her 90 kg father
A 40 kg girl, skating at 7 m/s, collides with her 90 kg father who is initially standing still. He grabs his daughter as she hits him and they both glide off together. What is their speed after the collision?
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a 40 kg girl skating at 7 ms collides with her 90 kg father who is initially standing still he grabs his daughter as
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