Ok this is another problem I am having trouble with.(adsbygoogle = window.adsbygoogle || []).push({});

In a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.2 s. Accelerating uniformly, Maggie took 2.10 s and Judy 3.10 s to attain maximum speed, which they maintained for the rest of the race. What was Maggie's acceleration?

Ok so I know that

Si (initial distance)= 0 m

Sf (final distance)= 100m

Delta T = 10.2s (10-0)

Vi( Initial velocity of maggy and Judy) = 0 m/s

I think Judy's time is there just to distract us, because every time I try to use both set of data and plug them into a kinematic equations for motion with constant acceleration, I reach a dead end.

So I tried a different method

100m - Sf = 1/2 * a * (2.10s) ^ 2

100m - Sf = 2.205A

A = (100m-Sf)/2.205

And Then I tried to plug that back into the SF equatoin but that didn't help.

Can anyone point me to the right direction?

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# Homework Help: Race Acceleration problem

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