Click and drag answers to change the order, or select using ↹ Tab then move by pressing Space and the ↑ ↓ arrows on your keyboard.
Passes between data points on a graph to show the pattern.
When one variable doubles, the other is doubled.
Returns to its original length when the forces are removed.
A description of the behaviour of springs.
To pick up a draggable item, press the space bar.
While dragging, use the arrow keys to move the item.
Press space again to drop the item in its new position, or press escape to cancel.