A race car travels northward on a straight, level track at a constant speed travels 0.754 km in 25.0 s. The return trip over the same track is made in 30.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run

27.42 m/s

Explanation:

Data provided in the question:

Distance traveled on a straight track = 0.754 km

Time taken to cover while going = 25.0 s

Time taken for the return = 30.0 s

Now,

Total distance covered = 2 * 0.754

= 1.508 Km

= 1508 m

Total time taken = 25 + 30 = 55 s

Therefore,

The average velocity of the car = Total distance : Total time

= 1508 : 55

= 27.42 m/s