QUESTION 7 A ball is thrown upward and its position (height) above the ground after t seconds is given below. Find the time, t, when the ball will be traveling upward at 20 #. To do this: . find the velocity (1st derivative) . set it equal to v = 20 . solve for t Choose one . 1 point h(t) = 80t - 16t (ft) O 2 secs O 1.875 secs O 1.67 secs O 2.125 secs