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January 31, 2015

January 31, 2015

Posted by **Marisol** on Sunday, October 14, 2007 at 10:44am.

1. What height is expected that the ball bearing reach.

I used the formula: vf=vo+2ax (velocity as a function of displacement)

so... 1.22^2=0+2(9.8)x, x = .0759m

2. For a given velocity, does the height depend on the mass of the ball?

According to the last problem, (if I did it right), the height does not depend on the mass.

Am I correct? Your help would be greatly appreciated.

- Physics -
**bobpursley**, Sunday, October 14, 2007 at 3:59pmyou are correct on both, however, on the first you worked it with a sign problem. Gravity is down, so it should have been negative, and you put in Vf, not Vo.

Should have been

Vf^2=Vo^2 + 2ad

0=1.22^2 + 2(-9.8)x

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