The speed of an object is a measure of the ____ it has travelled in a period of ____. A fast object will travel a ____ distance than a slower object in the same amount of time. The speed of vehicles is usually measured in m.p.h, which stands for ____ per ____ . In Europe, vehicle speed is measured in km/h which stands for ____ per hour. In physics, we usually measure speed in m/s which stands for ____ per ____. Physicists use the letter v for speed - this stands for the word ____.

1. Speed, distance, and time

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