Home
Class 11
PHYSICS
The minimum stopping distance of a car m...

The minimum stopping distance of a car moving with velocity `u` is `x`. If the car is moving with velocity 2v, then the minimum stopping distance will be.

A

`2x`

B

`4x`

C

3x`

D

`8x`

Text Solution

Verified by Experts

The correct Answer is:
B
Let retarding force is `F`
then, `Fx =1/2mv^(2)` ..(i)
and `F(x') =1/2m(2v)^(2)`....(ii)
Solving these two equations, we get .
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY & POWER

    DC PANDEY|Exercise Level 1 subjective|27 Videos

  • WORK, ENERGY & POWER

    DC PANDEY|Exercise Level 2 objective|30 Videos

  • WORK, ENERGY & POWER

    DC PANDEY|Exercise Level 1 Assertion and Reason|12 Videos

  • WAVE MOTION

    DC PANDEY|Exercise Integer Type Question|11 Videos

  • WORK, ENERGY AND POWER

    DC PANDEY|Exercise MEDICAL ENTRACES GALLERY|33 Videos

Similar Questions

Explore conceptually related problems

Stopping distance of a moving vehicle is directly proportional to

A car moving with a speed of 40 km//h can be stopped by applying the brakes after at least 2 m. If the same car is moving with a speed of 80 km//h , what is the minimum stopping distance?

Two cars of unequal masses use similar tyres. If they are moving at the same initial speed, the minimum stopping distante

What will be the minimum stopping distance required by a car to stop if it is moving with a velocity of 40m/s with a deceleration of 20m//s^(3) ? How much time will it take to stop the car?

A car , moving with a speed of 50 km//hr , can be stopped by brakes after at least 6m . If the same car is moving at a speed of 100 km//hr , the minimum stopping distance is

A car, moving with a speed of 50 km//hr , can be stopped by brakes after at least 6 m . If the same car is moving at a speed of 100 km//hr , the minimum stopping distance is

DC PANDEY-WORK, ENERGY & POWER-Level 1 Objective
  1. A person pulls a bucket of water from a well of depth h. if the mass ...

    Text Solution

    |

  2. The velocity of a particle decreases uniformly from 20 ms^(-1) to zero...

    Text Solution

    |

  3. The minimum stopping distance of a car moving with velocity u is x. If...

    Text Solution

    |

  4. A projectile is fired from the origin with a velocity v(0) at an angle...

    Text Solution

    |

  5. A particle of mass m moves from rest under the action of a constant f...

    Text Solution

    |

  6. A body moves under the action of a constant force along a straight lin...

    Text Solution

    |

  7. A ball is dropped at t=0 from a height on a elastic surface. Identify ...

    Text Solution

    |

  8. A block of mass 5 kg is raised from the bottom of the lake to a height...

    Text Solution

    |

  9. A bode mass m is projected at an angle theta with the horizontal with...

    Text Solution

    |

  10. A spring of force constant k is cut in two parts at its one-third ling...

    Text Solution

    |

  11. A particle moves under the action of a force F=20hati + 15hatj along a...

    Text Solution

    |

  12. A system of wedge and block as shown in figure, is released with the s...

    Text Solution

    |

  13. A forceF=(3thati + 5hatj)N acts on a body due to which its displacemen...

    Text Solution

    |

  14. An open knife of mass m is dropped from a height h on a wooden floor. ...

    Text Solution

    |

  15. Two springs have force constants k(A) and k(B) such that k(B)=2k(A). T...

    Text Solution

    |

  16. A mass of 0.5 kg moving with a speed of 1.5 m//s on a horizontal smoot...

    Text Solution

    |

  17. A bullet moving with a speed of 100 ms^(-1) can just penetrate into tw...

    Text Solution

    |

  18. A body of mass 100 g is attached to a hanging spring force constant is...

    Text Solution

    |

  19. An ideal massless spring S can compressed 1.0 m in equilibrium by a fo...

    Text Solution

    |

  20. A body of mass m is released from a height h on a smooth inclined plan...

    Text Solution

    |