Four similar cars having exactly the same mass are running at the same speed on the same road when brakes are applied at the same time. The cars come to a stop after covering distances of 5 m, 5.5 m, 4.8 m and 5.2 m respectively. The friction between the brake pads and discs will be the maximum in the car which travels the distance of:

If the static friction between two surfaces P and Q is measured to be 50 N, then the sliding friction between these two surfaces is most likely to be :

Which of the following will produce the maximum friction?

The weight of an object can be measured by a:

A book is lying on the horizontal table top. If we tilt the table a little, then the book starts sliding down slowly. This happens because: