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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. (Round all numbers to two decimal places.)

(a) Find the velocity of the rock after one second.
m/s

(b) Find the velocity of the rock when t = a.
m/s

(c) When will the rock hit the surface?
t = seconds

(d) With what velocity will the rock hit the surface?
m/s

 

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