Do different tire treads affect the stopping distance of a car? The manipulated variable is, tire tread, stopping distance, type of road surface, weather condition, speed of car, type of car, Do different tire treads affect the stopping distance of a car? The responding variable is, tire tread, stopping distance, type of road surface, weather condition, speed of car, type of car, Do different tire treads affect the stopping distance of a car? All the controlled variable is, tire tread, stopping distance, type of road surface, weather condition, speed of car, type of car

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