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Long-term effects.
The motion is not finished when the boat stops, however. If the fan is left in reverse, the continued thrust will now begin to accelerate the boat backward. In one-dimensional language, the velocity reaches zero and continues to decrease, so the speed (absolute value of velocity) is now increasing. The boat will therefore begin to move west, and with increasing speed. Thus, the position vs. time graph will begin to decrease with a steepening slope.
A warning An important note about constant acceleration.
| Warningnote |
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It is vitally important to remember that an object cannot remain at rest for more than an instant if it is acted upon by a constant acceleration. |
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