Physics can feel inscrutable to students; this lesson helps them understand a graphing problem by analyzing their own ...

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.

While most of us have never had the opportunity to go into space, we all have the chance to dream about it and wonder what it would be like. Across a wide variety of science fiction shows, you can ...