Four similar cars having exactly the same mass are running at the same speed on the same road when breakes are applied at the same time. The cars come to stop covering distance 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 :

Options

A. 5 m
B. 5.5 m
C. 4.8 m
D. 5.2 m

Answer

To determine which car experiences the maximum friction between the brake pads and discs, we need to analyze the stopping distances of the four cars. Here’s a step-by-step solution:

### Step 1: Understand the relationship between stopping distance and friction
When brakes are applied, the friction between the brake pads and discs is what brings the car to a stop. The greater the friction, the shorter the stopping distance. Therefore, if a car stops in a shorter distance, it indicates that there was more friction acting on it.

### Step 2: Identify the stopping distances of the cars
The stopping distances for the four cars are as follows:
- Car 1: 5.0 m
- Car 2: 5.5 m
- Car 3: 4.8 m
- Car 4: 5.2 m

### Step 3: Compare the stopping distances
Now, we will compare the stopping distances:
- Car 1 stopped at 5.0 m
- Car 2 stopped at 5.5 m
- Car 3 stopped at 4.8 m (shortest distance)
- Car 4 stopped at 5.2 m

### Step 4: Determine which car has the maximum friction
Since Car 3 has the shortest stopping distance (4.8 m), it indicates that it experienced the maximum friction between the brake pads and discs.

### Conclusion
The car that travels the shortest distance before stopping (Car 3 at 4.8 m) will have the maximum friction between the brake pads and discs.

### Final Answer
The car which travels the distance of 4.8 m will have the maximum friction.

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