Instantaneous speed is a crucial concept in physics, helping us understand how fast an object is moving at a specific point in time. Unlike average speed, which considers the total distance traveled ...

An average speed for a journey can be found from a distance-time graph by working out the gradient of the line between the two points of interest. This is like using a car's milometer and clock to ...

When a relationship between two variables is defined by a curve it means that the gradient, or rate of change is always varying. An average speed for a journey can be found from a distance-time graph ...