SOLUTION: You are driving to school in your car with an average velocity of 82.5 km/hr for 9.3 km. You then see a cop and decide to slow down. You then travel with an average velocity of 52.

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: You are driving to school in your car with an average velocity of 82.5 km/hr for 9.3 km. You then see a cop and decide to slow down. You then travel with an average velocity of 52.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 989936: You are driving to school in your car with an average velocity of 82.5 km/hr for 9.3 km. You then see a cop and decide to slow down. You then travel with an average velocity of 52.8 km/hr for 6.7 km.What is your average velocity for the whole trip?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the time for both distances.
t%5B1%5D=9.3%2F82.5=0.1127hr
t%5B2%5D=6.7%2F52.8=0.1269hr
Total distance traveled is,
d=9.3%2B6.7=16km%2Fhr
Total time to travel is,
t=0.1127%2B0.1269=0.2396hr
So the average speed is,
S%5Bave%5D=16%2F0.2396=66.8 kph