 Limbsaver Speed Mount Recoil Pad For Benelli Md: 10400 . US $21.99 
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Could someone explain this formula? (mVcos(alpha))/(M+m)?
A cannon is mounted at a angle alpha to a flatcar initially at rest. The mass of the car and cannon is M. A connonball of the mass m is fired at speed V relative to the cannon. Show that the recoil is: (mVcos(alpha))/(M+m)
total mass = (M+m)
The vertical components of velocity V, will cancel out
and remain only horizontal component of velocity V, =Vcos(alpha)
net horizontal momentum = (mVcos(alpha))
recoil is: (mVcos(alpha))/(M+m)
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