Steve skated 12 kilometers in 52 minutes. Then he turned around and took the same path back to his starting point, arriving 3 hours and 24 minutes later. What was his average speed during his trip?
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given:
Distance: 12 kilometers
Time 1 = 52 minutes
Time 2 = 3 hours and 24 minutes
Determine the average speed during the trip.
Formula for average velocity:
Vave = change in distance/change in time
Solution:
Convert first Time 2 in minutes and distance into km for us to be able to have a consistent answer.
3 hours and 24 minutes = 204 minutes
12 km = 12000 m
Thus we will express our answers in m per minute
Substitute the given values in the formula for average velocity.
Vave = 12000m/ (204 minutes - 52 minutes)
Vave = 12000m/ 152 min
Vave = 78.94 m/min
Final answer:
Vave = 78.94 m/min