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A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass of the cannon?

 May 13, 2021
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Let's use conservation of momentum   

 

32.5 * 388  = 7.42 * mc

mc =  1699.46 ~~1700 kg

 May 13, 2021

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