assuming negligible air resistance, how long will it take for a sphere to fall 36.0 meters if thrown downward at 12 m/s?(adsbygoogle = window.adsbygoogle || []).push({});

2. kinematics

x= x0 +v0t + (1/2)at^2

3. plugging it in..

36= 12t + 4.9t^2

4.9t^2+12t - 36

doing all the math and what not with the quadratic I get

1.04

the answer is 1.75

this is a pretty simple question....I dont know why I'm having trouble with it...

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# Homework Help: Quick Kinematics Question

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