When a rock is thrown on Mars with a velocity of 13 m/s the height after a time t is H = 13t - 1.86*t^2

The velocity of the rock is the derivative of height H with respect to t.

H' = 13 - 3.72*t m/s

** After 2 seconds the...**

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When a rock is thrown on Mars with a velocity of 13 m/s the height after a time t is H = 13t - 1.86*t^2

The velocity of the rock is the derivative of height H with respect to t.

H' = 13 - 3.72*t m/s

**After 2 seconds the velocity is 5.56 m/s.**