An airplane travels at 300 mi/h south for 2.00 h and then at 250 mi/h north for 750 miles. What is the average speed for the trip?

Avg sped = total distance / total time = 1350 mi / 5 hrs = 270mph (i dont know if ur teacher wants you to convert this to m/s)

300miles are traveled in 1 hr. So, 300 * 2hrs = 600 miles south

750/250 = 3hrs north

Total distance = 600 miles + 750 miles = 1350 miles

Total time is = 3hrs + 2hrs = 5hrs