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A 1.2-kg blob of putty moving at 4.0m/s slams into a 1.2-kg blob of putty at rest. Calculate the speed of the two stuck-together blobs of putty immediately after colliding.

Express your answer to two significant figures and include the appropriate units.

1 answer

momentum before = momentum after
1.2 * 4 = 2.4 * v

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