Why is it that the reaction distance increases with speed while the reaction time stays the same?

Question

Why is it that the reaction distance increases with speed while the reaction time stays the same?

Answer 1

Imagine your reaction time is 0.5 second. If you are driving 10 m/s, it means you the reaction distance will be 5 meters [0.5 x 10].

Now, if you drive 20 m/s, your reaction distance will be 10 meters [0.5 x 20], although your reaction time is still the same.