find the velocity of the first car at 4.4 seconds.
AT that point, both have the same starting point, one is accelerating, one is const velocity. When they meet again, they have traveled the same distance.
d1=vi*t+1/2 a t^2
d2=68.1*t
d1=d2, set them equal, solve for time.
A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 5.4 m/s2; after 4.4 s he enters the main speedway. At the same instant, another car on the speedway and traveling at a constant velocity of 68.1 m/s overtakes and passes the entering car. The entering car maintains its acceleration. How much time is required for the entering car to catch up with the other car?
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