a race car travels northward on a straight level track at a contant speed traveling 0.750 km in 20.0s. the return trip over the same track is madein 25.os

great. Now is there a question here?

15000ms

To find the average speed of the race car, we need to divide the total distance traveled by the total time taken.

For the northward trip:
Distance traveled = 0.750 km
Time taken = 20.0 s

For the return trip:
Distance traveled = 0.750 km (since it is the same track)
Time taken = 25.0 s

Now, we can calculate the average speed for each trip using the formula:

Average Speed = Distance / Time

For the northward trip:
Average Speed = 0.750 km / 20.0 s = 0.0375 km/s

For the return trip:
Average Speed = 0.750 km / 25.0 s = 0.03 km/s

So, the average speed of the race car on the northward trip is 0.0375 km/s, and on the return trip is 0.03 km/s.