Answer is “unconscious”
Reason: Sigmund Freud pushed for the importance of the unconscious mind. Freudian theory is that the unconscious mind directs our behavior more than people think.
If it is average speed per hour, then you just have to divide 3.5 into 60
60/3.5 = 17.143 so around 17km/h
If you repeat the experiment, you will want to do it the same way to see if the results change.
HOPE THIS HELPS!!!