Momentum & Impulse
mA v1 + mBv1 = mAv2 + mBv2
Practice Problem:
Calculate the recoil velocity of a 400.0-kg cannon that shoots a 5.0-kg ball at a speed of 280 m/s.
(400.0 kg)(0) +(5.0 kg)(0) = (400.0 kg)(280 m/s) + (5.0 kg)(v2)
0 = 112,000 kgïm/s + (5.0 kg)(v2)
-112,000 kgïm/s = (5.0 kg)(v2)
-22,400 m/s = v2
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