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A spring balance can be used to measure
A) Mass of an object
B) Force acting on an object
C) Density of an object
D) Weight of an object
A spring balance can measure both the force acting on it as well as the weight of the object.
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: