bengiz by slupy to be as A 3. If a rock is thrown upward on the planet Mars with a velocity of 10 m/s, its height (in meters) after t seconds is given by H=10t 1.86t2 - bsvis a) Find the velocity of the rock after t = 1 second b) Find the average velocity of the rock between t = 1 and t = 2 seconds c) When will the rock hit the surface of the planet? d) With what velocity will the rock hit the surface? siup