Question

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?

Answer 1

270 mi/h

Step-by-step explanation:

Average speed = total distance / total time

v = (300 mi/h × 2.00 h + 750 mi) / (2.00 h + 750 mi / 250 mi/h)

v = (600 mi + 750 mi) / (2.00 h + 3.00 h)

v = 1350 mi / 5 h

v = 270 mi/h