# 6_disturbances_of_quality_time_for...

Apr 28th, 2015
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Momentum Q and AQuestion:A 275lb cannon fires a 4 lb cannon ball at 79 m/s. Solve for the recoil velocity of the cannonAnswer:Momentum = mass x velocityp = m x vand since 1lb = 0.45kg4lb = 8x0.45=1.8kgp = 1.8kg x 79m/s= 142.2From p = m x vMass of the cannon in kg is: 275 x 0.45 = 123.8kg

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