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July 28, 2014

July 28, 2014

Posted by **Bob** on Wednesday, October 26, 2011 at 10:57pm.

- Math -
**Reiny**, Thursday, October 27, 2011 at 7:55amheight = -16t^2 + 48t + 10

d(height)/dt = -32t + 48

= 0 at max height

32t=48

t = 48/32 = 1.5

so at 1.5 seconds,

height = -16(1.5)^2 + 48(1.5) + 10 = 59.5 ft

check my arithmetic

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