A bb gun shoots pellets so that their velocity is given by, Ask an Expert

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A BB gun shoots pellets so that their velocity is given by v = (-5.00 107) t 2 + (2.80 105) t, where v is in meters per second and t is in seconds. The acceleration of the pellet just as it leaves the barrel is zero.

(A) Determine the length of time the pellet is accelerated.

(B) Find the speed at which the pellet leaves the barrel.

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