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Old Feb 2nd 2010, 06:15 PM   #1
s3a
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Join Date: Mar 2009
Posts: 129
1D Kinematics Question

Question:
"A set of keys slides along the floor, coming to rest 1.9 meters from where they started. If the initial speed of the keys was 4.8 m/s then ....

acceleration = ?
time = ?"

The question seems to give only final position and initial velocity which is not enough information to use any of the Equations of Kinematics with Uniform Acceleration! What am I missing?

Any help would be greatly appreciated!
Thanks in advance!

Edit: Nevermind, I just needed to see that final velocity is 0. If others care; a = -6.0632 m/s^2 and t = 0.7917 s.

Last edited by s3a; Feb 2nd 2010 at 07:13 PM.
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