Movimento a uma dimensão
Position, velocity and acceleration are related by slopes and areas, and this simulation draws all three graphs together as an object moves along a line. Changing the motion updates every graph at once, making the connections concrete.
Como usar esta simulação
- Set the initial position, velocity and acceleration
- Play, pause and scrub through the motion
- Read values off all three graphs at any instant
O que observar
- Constant velocity gives a straight position graph and a flat velocity graph
- Constant acceleration curves the position graph into a parabola
- The object is momentarily at rest where the position graph turns, not where it crosses zero
A física por trás
Velocity is the gradient of the position–time graph and acceleration the gradient of the velocity–time graph. Working backwards, the area under a velocity–time graph gives displacement and the area under an acceleration–time graph gives change in velocity. For constant acceleration these relationships reduce to the standard equations of motion.