We can determine both Ellen's speed and velocity during the trip.
Speed is a scalar quantity that measures how fast an object is moving, regardless of its direction. It can be calculated as:
\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} = \frac{2 \text{ miles}}{10 \text{ minutes}} = 0.2 \text{ miles/minute} \]
Velocity, on the other hand, is a vector quantity that includes both speed and direction. Since Ellen rides 2 miles north, her velocity can be expressed as:
\[ \text{Velocity} = 0.2 \text{ miles/minute north} \]
Thus, the correct response is: Both Ellen’s speed and velocity during the trip.