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Andreas (Parent) February 7 2017
Andreas (Parent) February 11 2017
Solve the equation x2=2x (solve x2-2x=0 by factorisation). Sketch the graphs y=x2 and y=2x, using standard graph shapes. Look at the sketch to see for which values of x the graph y=x2 lies above y=2x; this is your solution.
The difference is a bit subtle. Velocity is speed in a particular direction.
So, for example, a car travelling at 50 miles per hour round a bend is travelling at constant speed. Its direction is changing, however, so its velocity is also changing.
Velocity is always measured from a single point. So an object traveling in a circle has velocity zero relative to the centre of the circle, since the distance from the centre to the object is constant..see more