science
posted by Rachel .
A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.2 m/s2. At the same instant, a car passes the truck going 12 m/s. Where and when does the truck catch up with the car?

They go the same distance in the same time.
truck: d=1/2 a t^2
car: d=12t
set the distances equal
12t=1/2 a t^2
t=24/a
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