Posted by **help** on Monday, December 15, 2008 at 4:14pm.

At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.3 m/s2. At the same instant a truck, traveling with a constant speed of 9.4 m/s, overtakes and passes the automobile.

(a) How far beyond the traffic signal will the automobile overtake the truck?

m

(b) How fast will the car be traveling at that instant?

m/s

- physics -
**bobpursley**, Monday, December 15, 2008 at 4:19pm
at some time t, the same time for both cars, they have went the same distance d.

You have two equations

Truck: d=vi*t

Car: d=1/2 a t^2

set the equal, solve for t, thensolve for d.

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