Problem 2-62 - Distance and speed
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.
Which statement is correct?
(A) The truck travels at a constant speed for the whole trip.
(B) The truck travels at two different speeds for the whole trip.
(C) The truck's speed is constantly changing.