The speed of a bullet as it travels down the barrel of a rifle toward the opening is given by v = (-5.70 107) t 2 + (2.15 105) 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.)