February 27, 2017

Homework Help: calculus

Posted by steve Alexander on Friday, October 24, 2008 at 7:24pm.

an object is fired upward at the end of the burn it has an upward velocity of 245m/s and is 14.7 m high
a) find the maximum height and when it is attained
b) when it reaches the ground

i know that i have to use the quadratic function s= -4.9t²+Vot+h

but for what i have the 4.9t² how can i use it and can help me with the problem please

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