Posted by **chelsea** on Saturday, February 9, 2013 at 8:18pm.

A boy and his skateboard have a combined mass of 64 kg. If he is moving with a speed of

3.2 m/s, and collides with a stationary skateboarder whose mass (including his skateboard) is

96 kg, with what speed will the two skateboarders move immediately after the collision?

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