1) Do different tire treads affect the stopping distance of a car? The manipulated variable is a) tire tread b) stopping distance c) type of road surface d) weather condition e) speed of car f) type of car 2) Do different tire treads affect the stopping distance of a car? The responding variable is a) tire tread b) stopping distance c) type of road surface d) weather condition e) speed of car f) type of car 3) Do different tire treads affect the stopping distance of a car? All the controlled variable is a) tire tread b) stopping distance c) type of road surface d) weather condition e) speed of car f) type of car

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