Question

You drive in a straight line at 24.0 m/s for 8.0 miles, then at 30.0 m/s for another 8.0 miles. What is the average velocity?

Answer 1

8 miles = 12874.8m 
Total distance = 16 miles = 25749.5m 
 time = distance/velocity
 First instance, t =12874.8/24
  = 536.45 
 Second instance, t = 12874.8/30
  = 429.16 
 Total time = 536.45 + 429.16 = 965.61 
 Average velocity = Total distance / Total time
  = 25749.5/965.61
  = 26.67 m/s