(a) Write the kinematic equation for the y-coordinate of each ball. (Let up be positive.) y1 = (ball 1) y2 = (ball 2) (b) Set the equations found in part (a) equal to height 0 and solve each for t symbolically using the quadratic formula. What is the difference in the two ball's time in the air? (Remember that t must always be a positive quantity.) t2 − t1 = (c) Use the time-dependent kinematics equation to find the velocity of each ball as it strikes the ground. v1 = (ball 1) v2 = (ball 2)

(a) Write the kinematic equation for the y-coordinate of each ball. (Let up be positive.) y1 = (ball 1) y2 = (ball 2) (b) Set the equations found in part (a) equal to height 0 and solve each for t symbolically using the quadratic formula. What is the difference in the two ball's time in the air? (Remember that t must always be a positive quantity.) t2 − t1 = (c) Use the time-dependent kinematics equation to find the velocity of each ball as it strikes the ground. v1 = (ball 1) v2 = (ball 2)

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