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The speed of a bullet as it travels down the barrel of a rifle toward the opening is given by -(-4.05x 107)2(2.45 x 105)t, where v is in meters per second and t is in seconds. The acceleration of the bullet just as it leaves the barrel is zero. (a) Determine the acceleration and position of the bullet as a function of time when the bullet is in the barrel. (Use t as necessary and round all numerical coefficients to exactly 3 significant figures.) m/s2 (b) Determine the length of time the bullet is accelerated (c) Find the speed at which the bullet leaves the barrel m/s (d) What is the length of the barrel?

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