P2.3.1 - Speed
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卡片预览 (12 张)
What does the calculation trangle look like when calculating speed?
What is missing?
What is missing?
What is meant by speed?
The distance something travels in a certain amount of time.
What is the relative speed of two trains moving towards each other at 30 m.p.h?
60 m.p.h
How do we calculates speed?
Speed = Distance ÷ Time
What are the units of speed?
Metres per second (m/s)
What is missing?
The speed that an object travels during a complete journey is called the…
average speed.
What is meant by relative motion?
The speed that one object travels compared to another. e.g. looking at a moving train from a stationary one feels the same as being on a moving train and looking at a stationary one.
The speed that a runner is running at any specific point during a race is called the…
instantaneous speed.
What is the relative speed of two trains moving at the same speed in the same direction?
Zero