Question

You travel 20.0 mph for .500 hour, 40.0 mph for 1.00 hour, 30.0mph for .500 hour,and 50.0mph for 2.00 hours. What is the average speed?

Answer 1

Let the total distance traveled be d:
\[\large d= (20\times0.5)+(40\times1)+(30\times0.5)+(50\times2)\ miles\]
Let the time taken to travel the total distance be t:
\[\large t=(0.5+1+0.5+2)\ hours\]
The average speed is given by:
\[\large Average\ speed=\frac{d}{t}=you\ can\ calculate\]