If a rock is thrown upward on the planet Mars with a velocity of 10 meters per seconds, its height (in meters) after 75 seconds is given by H (t) = 1015 1.86t2 . a. Find the velocity of the rock after one second. C] Select an answer v b. Since the velocity of the rock at t = l is the rock is moving c. What is the velocity of the rock at t = a, ? we) = Hm = C] d. When will the rock hit the surface? Round to three decimal places and use this value in any_ further questions. C] (hint: Technically there are two solutions, but one of them is not very interesting) f. What is the velocity when the rock hits the ground? Round to three decimal places C] Select an answer v ' . Since the velocity right before the rock hits the round is the rock is mowing