kayleebug13
02.07.2019 •
Physics
If a rock is thrown vertically upward from the surface of mars with velocity 15 mys, its height after t seconds is h − 15t 2 1.86t2. (a) what is the velocity of the rock after 2 s? (b) what is the velocity of the rock when its height is 25 m on its way up? on its way down?
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Ответ:
the second one is d :)