Editor's Note: The Hyperloop is a totally imaginary transportation device that has captivated entrepreneur Elon Musk, who keeps talking about it. First imagined at least 100 years ago, it would ...

Keywords Learn how to solve particle motion problems. Particle motion problems are usually modeled using functions. Now, when ...

Determining acceleration If an object moves along a straight line, its motion can be represented by a velocity-time graph. The gradient of the line is equal to the acceleration of the object. The ...

Keywords Learn how to solve particle motion problems. Particle motion problems are usually modeled using functions. Now, when ...

Velocity-time graphs show how the velocity (or speed) of a moving object changes with time. These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or still.