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.

Question

(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

Answer 1

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.