Ok this is another problem I am having trouble with. 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?