If you drive from Physicsland to Chemistryland at a constant speed of 120 km/h and immediately return at a constant speed of 60.0 km/h, what is your average speed?
The Attempt at a Solution
Somebody helped me out on this question and we used a weighted average.
(120 x 1/3) + (60 x 2/3) = 8.0 x 10^1 km/h
The answer is correct, but I don't understand how this weighted averaging works.
It would be great if you could help me understand!