A car stops on applying brakes mainly due to ...... force.
Frictional
When brakes are applied, the brake pads press tightly against the wheel disc or drum, and the tyres press against the road surface.
This contact produces a frictional force that opposes the relative motion of the surfaces and decelerates the car until it stops.
Gravitational force acts vertically and does not oppose forward motion; centripetal and centrifugal forces act only during circular motion, not during braking in a straight line.
Hence, Frictional.
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