Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both. In a car you could accelerate by hitting the gas or the brakes, either of which would cause a change in speed.
2.0mph/s and 5.0mph/s You are accelerating, meaning you wouldn’t be going negative. However if you slowed down, then you could say you’re moving at -2.0mph/s
Hypertonic solutions have more solute than solvent. The external solution will have a higher osmotic pressure than the cell contents and therefore water will pass out of the cell which will then shrink.
