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Statement I: The driver of a moving car ...

Statement I: The driver of a moving car sees a wall in front of him. To avoid collision, he should apply brakes rather than taking a turn away from the wall.
Statement II: Frictional force is needed to stop the car or taking a turn on a horizontal road.

A

Statement I is true, statement II is true, Statement II is the correct explanation for statement I.

B

Statemet I is true, Statement II is true , Statement II is NOT the correct explanation for Statement I

C

Statement I is True, Statement II is False.

D

Statement I is False, Statement II is true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements, we will break down each statement and evaluate their validity step by step. ### Step 1: Evaluate Statement I **Statement I:** The driver of a moving car sees a wall in front of him. To avoid collision, he should apply brakes rather than taking a turn away from the wall. - When a driver sees a wall and wants to avoid a collision, applying the brakes is a direct method to reduce the speed of the car. - If the driver decides to take a turn instead, the car must rely on friction to provide the necessary centripetal force to make the turn. - If the speed is too high or the friction is insufficient, the car may skid and still collide with the wall. - Therefore, applying the brakes is generally a more reliable method to avoid a collision than attempting to turn away from the wall. **Conclusion for Statement I:** True. ### Step 2: Evaluate Statement II **Statement II:** Frictional force is needed to stop the car or taking a turn on a horizontal road. - Friction is indeed essential for both stopping a vehicle and for turning. - When a car stops, the friction between the tires and the road surface allows the car to decelerate effectively. - Similarly, when a car turns on a horizontal road, the frictional force provides the necessary centripetal force to keep the car moving in a circular path. - Without sufficient friction, the car would not be able to stop effectively or make a turn without skidding. **Conclusion for Statement II:** True. ### Step 3: Analyze the Relationship Between Statements - Both statements are true; however, they address different aspects of vehicle dynamics. - Statement I focuses on the immediate action to avoid a collision (applying brakes), while Statement II discusses the role of friction in stopping and turning. - There is no direct causal relationship between the two statements; one does not explain the other. ### Final Conclusion Both statements are true, but Statement II does not serve as a correct explanation for Statement I. ### Answer Both statements are true, but Statement II is not the correct explanation of Statement I. ---
To analyze the given statements, we will break down each statement and evaluate their validity step by step. ### Step 1: Evaluate Statement I **Statement I:** The driver of a moving car sees a wall in front of him. To avoid collision, he should apply brakes rather than taking a turn away from the wall. - When a driver sees a wall and wants to avoid a collision, applying the brakes is a direct method to reduce the speed of the car. - If the driver decides to take a turn instead, the car must rely on friction to provide the necessary centripetal force to make the turn. - If the speed is too high or the friction is insufficient, the car may skid and still collide with the wall. ...
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A car driver going at speed v suddenly finds a wide wall at a distance r . Should he apply breakes or turn the car in a circle of radius r to avoid hitting the wall.

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Knowledge Check

  • The driver of a car travelling at velocity v suddenly see a broad wall in front of him at a distance d. He should

    A
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    B
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    C
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    B
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    C
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    D
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