If a rock is thrown upward on the planet Mars with a velocity of 17 m/s, its height (in meters) after t seconds is given by H = 17t − 1.86t2.(a) Find the velocity of the rock after two seconds.9.6 Correct: Your answer is correct. m/s(b) Find the velocity of the rock when t = a. Correct: Your answer is correct. m/s(c) When will the rock hit the surface? (Round your answer to one decimal place.

The slope of a velocity time graph over any interval of time gives the during that interval

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

What component of earth’s atmosphere exists entirely as a result of photosynthesis?