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April 19, 2015

April 19, 2015

Posted by **help** on Saturday, July 7, 2012 at 8:34pm.

A projectile is fired directly upward with an initial velocity of 144 ft/sec and its height (in feet) above the ground after t seconds is given by s(t). Find the (a) the velocity and acceleration after t seconds (b) the maximum height and (c) the duration of the flight.

s(t)= 144-16t^2

- calculus -
**bobpursley**, Saturday, July 7, 2012 at 9:06pmYour equation is wrong.

s(t)=144t-16t^2

s'=velocity=144-32t

s"=acceleration=-32ft/s^2

Now try it.

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