What may happen if you go too deep or stay too long? You may suffer from nitrous oxide poisoning. You may not be able to make a direct ascent to the surface without substantially increasing your risk of decompression sickness. Your dive computer may require you to make a series of decompression stops. The second and third answers are correct; the first is n

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s