Participants in this exercise were asked to rate the accuracy of their personality tests (before being told of the ruse). Despite the deception at hand, most felt it was very accurate, with ratings generally falling between Select
, yielding a numerical mean of between
Select

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