Home
Class 11
PHYSICS
The driver of a car travelling at veloci...

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

brake sharply

B

turn sharply

C

brake sharply and turn sharply

D

none of the above

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Laws of Motion

    SL ARORA|Exercise Exercise|627 Videos

  • Kinetic Theory of gases

    SL ARORA|Exercise Example|47 Videos

  • LAWS OF MOTION : FRICTION

    SL ARORA|Exercise Self Practice|95 Videos

Similar Questions

Explore conceptually related problems

The dirver of a car travelling at a velcituy (v) suddenly sees a broad wall in front of mim at a distance r . Is it better to brake or to turn sharply ?

The driver of a car travelling with velocity v on a road suddenly sees a broad wall in front of him at a distance r . He has two alternatives: to turn sharply or a brake instantly. The passenger who is a professor of physics, advises him to brake to avoid collision. Read the above passage and answer the following questions: (i) How is the suggestion from Professor of Physics justified? (ii)Does the suggestion work really? (iii)What value do you learn from this experience?

The driver of a truck travelling with a velocity upsilon suddenly notices a brick wall in front of him at a distance d It is better for him to apply brakes or to make a circular turn without applying brakes in order to just avoid crashing into the wall ? Why ?

The driver of a bus travelling with a speed 'v' suddenly observes a wall in front of his bus at a distance 'a'. Father of this driver, who was also a driver, had advised him to take circular turn to avoid hitting in such a situation. However, the driver in question decides otherwise by using his own wisdom. He applies brakes as hard as possible without taking a circular turn, then :

The driver of a car travelling at speed v suddenly sees a wall at a distance r directly infront of him. To avoid collision, should he apply the brakes or turn the car sharply away from the wall ? Give reason.

The driver of a car travelling at 72 km h^(-1) suddenly sees a big rock on the road at a distance of 20m. What can he do to avoid a collision ?

The driver of a car-travelling at speed V suddenly sees a wall at a distance r directly infront of him. To avoid collision. He should :

The driver of a train travelling at 115 km/hour sees on the same track 100 m in front of him a slow train travelling in same direction at 25 km/hr. The least retardation that must be applied to the faster train to avoid a collision will be-

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.

The driver of a car travelling with a speed of 30 m/s towards a wall sounds a siren of frequency 500 Hz. If the velocity of sound in air is 330 m/s, then the frequency of the sound reflected from the wall and as heard by the driver is

SL ARORA-Laws of Motion-Exercise
  1. A car is moving in a circular horizonta track of radius 10m with a con...

    Text Solution

    |

  2. A small block is shot into each of the four tracks as shown below. Eac...

    Text Solution

    |

  3. The driver of a car travelling at velocity v suddenly see a broad wall...

    Text Solution

    |

  4. A stone tied to a string of length L is whirled in a vertical circle w...

    Text Solution

    |

  5. Two particles of mass m each are tied at the ends of a light string of...

    Text Solution

    |

  6. A block of base 10 cm xx 10 cm and height 15 cm is kept on an inclined...

    Text Solution

    |

  7. A block is stationary on an inclined plane If the coefficient of frict...

    Text Solution

    |

  8. A block of mass m is on an inclined plane of angle theta. The coeffici...

    Text Solution

    |

  9. A ball of mass (m) 0.5 kg is attached to the end of a string having le...

    Text Solution

    |

  10. A ball of mass 0.2 kg rests on a vertical post of height 5m. A bullet ...

    Text Solution

    |

  11. A reference frame attached to the earth

    Text Solution

    |

  12. The balls, having linear momenta vecp1=vecpi and vecp22=-vecpi, underg...

    Text Solution

    |

  13. A small block of mass of 0.1 kg lies on a fixed inclined plane PQ whic...

    Text Solution

    |

  14. In the following questions, each question contains Statement I(asserti...

    Text Solution

    |

  15. STATEMENT-1: A cloth covers a table. Some dishes are kept on it. The c...

    Text Solution

    |

  16. STATEMENT-1: It is easier to pull a heavy object than to push it on a ...

    Text Solution

    |

  17. A block is moving on an inclined plane making an angle 45^@ with the h...

    Text Solution

    |

  18. A boy is pulshing a ring of mass 3 kg and radius 0.6 m with a stick a...

    Text Solution

    |

  19. A train is moving along a straight line with a constant acceleration a...

    Text Solution

    |

  20. A bob of mass m, suspended by a string of length l1 is given a minimum...

    Text Solution

    |