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.)