Saturday
February 28, 2015

Homework Help: algebra

Posted by dani on Wednesday, April 28, 2010 at 1:28pm.

Use the formula 4.9t^2 +vot=s, where t is the time in seconds, vo is the initial velocity, and s is the distance in meters.
Approximately how far will an object fall in 4 seonds, if it is thrown downward at an initial velocity of 20 meters per second (vo) from a helicopter?
Is this right?
4.9(t)^2+vot=s
4.9(4)^2+20(4)=s
(4.9)(16)+80=s
78.4 +80=s
158.4 meters

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