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April 1, 2015

April 1, 2015

Posted by **Tammy** on Monday, October 15, 2007 at 9:33pm.

65mph=29.05m/s

t=1s

a=constant

d=?

I am having trouble solving this problem. Would I use:

delta d = v_f^2 - v_0^2/(2a) But i don't think this is correct because there's no t and I also don't have a definite number for a. OR is the correct equation: d=d_0+v_0t+1/2at^2

but again I don't know a. Thanks in advance for your help. I really appreciate it.

- physics -
**bobpursley**, Monday, October 15, 2007 at 10:11pmWhy dont you find the final position when both have stopped, assuming the front car was d ahead at time zero? If the front car ends up behind the back car, a collision occured. You will need to adjust d to not let that happen.

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