# Question

A large car of mass 2m travels at speed v. A small car of mass m travels with a speed 2v. Both skid to a stop with the same coefficient of friction.

(a) The small car will have (1) a longer, (2) the same, (3) a shorter stopping distance.

(b) Calculate the ratio of the stopping distance of the small car to that of the large car. (Use the work– energy theorem, not Newton’s laws.)

(a) The small car will have (1) a longer, (2) the same, (3) a shorter stopping distance.

(b) Calculate the ratio of the stopping distance of the small car to that of the large car. (Use the work– energy theorem, not Newton’s laws.)

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