An impulse of 12.2 kg m/s is delivered to an object whose initial momentum is 4.5kg m/s. The impulse has the same direction as the initial momentum. What's the object's final momentum.
Impulse = change in momentum = Final momentum -Initial momentum
= Pf - 4.5 = 12.2
so Pf =12.2 + 4.5 = 16.7
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