Home
Class 12
PHYSICS
The driver of a three -wheeler moving wi...

The driver of a three -wheeler moving with a speed of 36 km/ h sees a child standing in the middle of the road and brings his vehicle to rest in 4. 0 s just in time to save the child . What is the average retarding force on the vehicle ? The mass of the three wheeler is 400 kg and the mass of the driver is 65 kg .

A

1000 N

B

1162 N

C

4650 N

D

465 N

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise MOTION IN A PLANE|79 Videos
  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MOVING CHANGES & MEGNETISM)|95 Videos
  • ATOMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|21 Videos
AAKASH SERIES-APPENDICES (REVISION EXERCISE)-LAW OF MOTION
  1. A cart loaded with sand moves along a horizontal plane due to a consta...

    Text Solution

    |

  2. Two billiard balls each of mass 0.05 kg moving in opposite directions ...

    Text Solution

    |

  3. The driver of a three -wheeler moving with a speed of 36 km/ h sees a ...

    Text Solution

    |

  4. If the average velocity of a body moving with uniform acceleration und...

    Text Solution

    |

  5. Five persons A, B, C, D & E are pulling a cart of mass 100kg on a smoo...

    Text Solution

    |

  6. A box is put on a scale which is adjusted to read zero, when the box i...

    Text Solution

    |

  7. Water is flowing at a speed of 1.5ms^(-1) through a horizontal tube of...

    Text Solution

    |

  8. Two particles of masses m(1) and m2 in projectile motion have velocit...

    Text Solution

    |

  9. A bomb falling freely bursts after 10 sec. (g=10ms^2) into two fragmen...

    Text Solution

    |

  10. An object initially at rest explodes into three fragments A, B and C. ...

    Text Solution

    |

  11. A shell of mass m is fired from a cannon at angle q to horizontal with...

    Text Solution

    |

  12. A 500kg boat has an initial speed of 10 ms^(-1) as it passes under a ...

    Text Solution

    |

  13. A railway flat car, whose mass together with the artillery gun is M, m...

    Text Solution

    |

  14. A machine gun is mounted on a flat rail car. The gun is firing bullets...

    Text Solution

    |

  15. A gun of mass M fires a bullet of mass m, with a Kinetic energy E. The...

    Text Solution

    |

  16. A body of mass 8kg at rest explodes into three parts whose masses are ...

    Text Solution

    |

  17. A gun of mass M fires a bullet of mass m horizontally. The energy of f...

    Text Solution

    |

  18. Two spacemen A and B are floating is gravity free space with zero velo...

    Text Solution

    |

  19. The first & second stage of two stage rocket separately weigh 100 kg a...

    Text Solution

    |

  20. A projectile of mass M is fired so that the horizontal range is 4 km. ...

    Text Solution

    |