Daisy (50. kg mass) skates on ice at 4.0 m/s to greet her friend (70. kg mass), who is standing still, with open arms. As they collide, while holding each other, with what speed do they both move off together?

A) 2.5 m/s
B) 1.7 m/s
C) zero
D) 5.0 m/s


B

Physics & Space Science

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