GRAPHS show how Omicron is fuelling the fastest ever Covid acceleration in London. The strain now accounts for more cases than Delta, despite only being detected for ...

A negative gradient shows the rate of “slowing down” or deceleration. Velocity-time graphs show velocity on the vertical axis. Acceleration is still represented by the gradient. Key fact The gradient ...

In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.