A 7.0kg cannonball flying rightwards at 12m/s hits a stationary rock. the cannonball keeps moving in the same direction at 2.0m/s after collision but sends the rock flying 14m/s towards right. what os the mass of the rock?
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A 7.0kg cannonball flying rightwards at 12m/s hits a stationary rock. the cannonball keeps moving in the same direction at 2.0m/s after collision but sends the rock flying 14m/s towards right. what os the mass of the rock?
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