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A 235 g mass is sliding along on wet ice at 8.5 m/s. You drop a...

A 235 g mass is sliding along on wet ice at 8.5 m/s. You drop a 75 g mass on top of it is as it passes, and the two masses continue off together. What is the new speed of the combined object? If the dropped mass has a speed of 1.8 m/s right before impact, how much kinetic energy is lost in the collision?

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