A motorist drives 150 km from one city to another in 2.5 h but makes the return trip ikn only 2.0 h. What are the average speeds for (a) each half of the round trip and (b) the total trip.

Question

marihelenh · Answer

@triciaal @amistre64

amistre64 · Answer

what is your concept of an average speed?

marihelenh · Answer

What do you mean? I tried the problem and I got some answers, could you see if I am on the right path with this problem?

amistre64 · Answer

solutions start with knowing what it is you are looking for ... in this case, it wants an average speed.

triciaal · Answer

distance between the cities stays the same

amistre64 · Answer

we need to make sure we have a proper definition of average speed to get started

marihelenh · Answer

s=d/t

amistre64 · Answer

more accurately I would say

average speed = (distance covered)/(time it took)

amistre64 · Answer

s (or speed) is an instantaneous measurement ...

marihelenh · Answer

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