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use both cosine law/sine law enough component method to answer the following: An explosion breaks a...

use both cosine law/sine law enough component method to answer the following:

An explosion breaks a stationary rock into 3 fragments. A 4.0 KG fragment flies due North at 20 m/s. A 3.0 kg fragment flies due West at 40 m/s. The third fragment has a mass of 5 KG. Calculate the velocity of the third fragment after the explosion.

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