Asked by Jenna

A car that was initially at rest reaches a final speed of +50.0 m/s over a displacement of +55.0 m.

What is the magnitude of the acceleration?

Find the time it took to travel the first 55 m.
Answered by Elena
a=v²/2s=...
s=at²/2 =>
t=sqrt{2s/a)=...
Answered by Jenna
I don't understand.. could you give a better answer?
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