February 21, 2017

Homework Help: PHYSICS

Posted by Anonymous on Wednesday, July 21, 2010 at 11:08pm.

An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car?

A. 3.75 km/h

B. 62.5 km/h

C. 1250 km/h

D. 250 km/h

The only way to find the average speed is to divide the total distance by the total time. What is the total distance in here? I thought that I would have to add 50 to 125, then divide that by .30 which indicates half and hour, but I am not getting the correct answer. What is that I'm doing wrong?

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