Homework Help: physics

Posted by fatimah on Sunday, March 3, 2013 at 12:18am.

A race car travels northward on a straight, level track at a constant speed travels 0.745 km in 22.0 s. The return trip over the same track is made in 27.0 s.
(a) What is the average velocity of the car in m/s for the first leg of the run?
m/s

(b) What is the average velocity for the total trip?
m/s

physics - Dr. Jane, Sunday, March 3, 2013 at 10:59am
Distance = velocity x time
.745 = velocity x 22

divide both sides by 22 to get the velocity for the first leg.

.745 = velocity x 27

do the same to get the velocity for the second leg.

to get the average: add the two velocities and divide by two.

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