Wednesday

January 28, 2015

January 28, 2015

Posted by **pam** on Thursday, March 21, 2013 at 9:53pm.

- math -
**Reiny**, Thursday, March 21, 2013 at 11:03pmh = vt - 4.9t^2

from the given ....

h = 20t - 4.9t^2 + 100 , where h is the height above ground

so after 4 seconds

h = 20(4) - 4.9(16) + 100

= 41.6 m above the ground

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