posted by Katie .
a race car traveling northward on a straight, level track at a constant speed travels 0.750 km in 20.0 s. the return trip over the same track is made in 25.0 s.
a) what is the average velocity if the car in m/s for the first leg of the run?
b) what is the average velocity for the total trip?
750 m/ 20 s
1500 m / 45 s