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April 1, 2015

April 1, 2015

Posted by **stan** on Wednesday, January 19, 2011 at 3:12pm.

developed an empirical formula for the velocity of a

projectile in terms of the distance traveled by the

projectile in the bore. For a 155-mm gun this

equation is

v = 3309s /(70 + s)

where s is the distance traveled in the bore in inches

and v is the speed of the projectile in feet per second.

Given that the distance the projectile travels in the

bore is 185 in., determine: (a) the magnitude of the

muzzle velocity of the projectile; (b) the magnitude of

the acceleration of the projectile when s = 50 in.

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