IVIAT-2192-035,60-AL-2021 Fall,2022 Spr,2022 Wir / Unit 8: Quadratic Equations / Unit 8: Quadratic Equations Exam Gravity affects the speed at which objects travel when they fall. Suppose a rock is dropped off a 7.5 m cliff on Mars. The height of the rock, h(t), in metres, over time, t, in seconds could be modelled by the function h(t) = -1.912 + 3.0t +7.5. (The acceleration due to gravity on Mars is 3.77 m/s.) How long would it take the rock to hit the bottom of the cliff, to the nearest 10th of a second? It will take seconds (Record your answer in the numerical response box from left to right)