Problem 2-62 - Distance and speed - Part 4 (b)

A truck travels at \(80\; km/h\) for \(30 \;min\), then at \(60\; km/h\) for \(1.5 \;hr.\) Assuming 2 significant digits in the given numbers, calculate the truck's
(a) total distance traveled, and
(b) average speed.


Accumulated Solution

\(\mathrm{speed = \frac{d}{\Delta t }\\ d = (speed) \Delta t}\)


No. The time unit in the speed is \(h\) not \(min\) and in any case the distance is NOT speed/time

 

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