Answer:Braking too hard at a fast speed usually causes a locked wheel skid.
Explanation:A locked wheel skid occurs when a wheel stops rotating and slides along the road surface, typically due to excessive braking force being applied too quickly. When this happens, the vehicle can no longer be steered and may continue in a straight line or begin to slide sideways.
At a slow speed, the vehicle is less likely to skid since it has more time to come to a stop without locking the wheels. Braking lightly at a slow speed can help prevent a skid from occurring.