General: Impact Time of a Projectile If an object is thrown upward so that its height (in feet) above the ground t seconds after it is thrown is given by the function h(t) below, find when the object hits the ground. That is, find the positive value of t such that h(t) = 0. Give the answer correct to two decimal places. [Hint: Enter the function in terms of x rather than t. Use the ZERO operation, or TRACE and ZOOM IN, or similar operations.]
h(t) = -16t2+45t+5
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