Question

a word using a quadratic equation with irrational. A ball is thrown from an initial height of 1 meter with an initial upward velocity of і5 m/s. The bars height h (in meters) after t seconds is given by the Find all values of t for which the ball's height is 6 meters (If there is more than one answer, use the "or" button.) height MacBook Ai

Answer 1

h = 1 + 15t - 5t^2 when height is h = 6m 1 + 15t - 5t^2 = 6 5t^2 - 15t + 5 = 0 t^2 - 3t + 1 = 0 t = 3 plusminus squareroot 9 - 4/2 = 3 plusminus squareroot 5/2 So requires time are t = 3 + squareroot 5/2 & t = 3 - squareroot 5/2 t = 2.618 or 0.38196 Ans.