Save guides, add subjects and pick up where you left off with your BBC account. The gradient of a velocity-time graph at a particular time gives the acceleration of the object at that time.

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. Acceleration is shown by a straight rising line.

With a smaller force, it will have a smaller acceleration—but it will still accelerate. Eventually, its speed will reach a point at which the air drag ... time for that pulse to reflect off an ...