7. Two cars of unequal masses use similar tyres. If they are moving at the same initial speed, the minimum stopping distance (a) is smaller for the heavier car (b) is smaller for the lighter car (c) is same for both cars (d) depends on the volume of the car. 8. In order to stop a car in shortest distance on a horizontal road, one should (a) apply the brakes very hard so that the wheels stop rotating (b) apply the brakes hard enough to just prevent slipping (c) pump the brakes (press and release) (d) shut the engine off and not apply brakes.