gradient = \(\frac{change~in~y}{change~in~x} = \frac{change~in~speed}{change~in~time} = \) \( \frac{change~in~metres~per~second}{change~in~seconds}\) = metres per ...

A horizontal line means the object is moving at a constant speed. The gradient of the line = the rate of change of speed. The steeper the line, the greater the increase in speed. The area under the ...

You have waited long enough. It is now time for another Angry Birds post. Today, it is the yellow bird's time. To start, an Angry Birds haiku: The Sun and sky, still. Green pigs cackle with delight.