Home
Class 11
PHYSICS
Two young men going in double ride over ...

Two young men going in double ride over a bike along a straight road, one man sitting back fall down over the bike then velocity of bike increases or decreases ? Why ?

Text Solution

Verified by Experts

Increases, because when the man sitting back falls down, mass decreases and momentum remains constant and so speed increases.
Promotional Banner

Topper's Solved these Questions

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    KUMAR PRAKASHAN|Exercise SECTION-D NCERT EXEMPLAR SOLUTIONS|13 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    KUMAR PRAKASHAN|Exercise SECTION-D NCERT EXEMPLAR SOLUTIONS (VERY SHORT ANSWER TYPE QUESTIONS)|5 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    KUMAR PRAKASHAN|Exercise SECTION-B NUMERICAL FROM .DARPAN. BASED ON TEXTBOOK|17 Videos

  • QUESTIONS ASKED IN JEE - 2020

    KUMAR PRAKASHAN|Exercise Question|16 Videos

  • THERMAL PROPERTIES OF MATTER

    KUMAR PRAKASHAN|Exercise Question Paper (Section - D) (Answer following in brief :) Each carry 4 marks|1 Videos

Similar Questions

Explore conceptually related problems

A man starts running along a straight road with uniform velocity observes that the rain is falling vertically downward. If he doubles his speed, he finds that the rain is coming at an angle theta to the vertical. The velocity of rain with respect to the ground is :

In the figure there is a long horizontal bridge over a river 75 m high from water surface. A strong man throws a stone in the parallel plane of the bridge. A observer in a car travelling on the bridge finds the stone going pass by the car while ascending and also while descending between two points on the road 30 m away. The car is travelling at a speed of 15 m/s. The stone is thrown from the bank of river just at the same level of water. What is the angle the velocity makes with the bridge when it goes past the car while ascending ?

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h^(-1). Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^(-1). What is the (a) magnitude of average velocity, and (b) average speed of the man over the interval of time (i) 0 to 30 min, (ii) 0 to 50 min, (iii) 0 to 40 min ? [Note: You will appreciate from this exercise why it is better to define average speed as total path length divided by time, and not as magnitude of average velocity. You would not like to tell the tired man on his return home that his average speed was zero !]

KUMAR PRAKASHAN-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-SECTION-C OBJECTIVE QUESTIONS (VSQs)
  1. Give two examples of a rigid body where the center of mass lies outsid...

    Text Solution

    |

  2. Two young men going in double ride over a bike along a straight road, ...

    Text Solution

    |

  3. Write the difference between centre of gravity and centre of mass of a...

    Text Solution

    |

  4. .Does the velocity of all particles of a system is equal to the veloci...

    Text Solution

    |

  5. Why law of conservation of linear momentum is universal and fundamenta...

    Text Solution

    |

  6. Which two physical quantities remains constant in law of conservation ...

    Text Solution

    |

  7. On which factors centre of mass of rigid body depends?

    Text Solution

    |

  8. Write the kinetic energy of a body of momentum p and velocity v.

    Text Solution

    |

  9. Why do internal forces in a system do not effect the velocity of a sys...

    Text Solution

    |

  10. If a gas is filled in a rest sphere, its molecules moves randomly due ...

    Text Solution

    |

  11. Mention the position of centre of mass of two particles of equal mass.

    Text Solution

    |

  12. What is the SI unit of angular velocity and angular acceleration?

    Text Solution

    |

  13. What is the value of tangential component of a linear acceleration for...

    Text Solution

    |

  14. The linear variable of all particles are same in rotational motion of ...

    Text Solution

    |

  15. Give the rotational analogue of force.

    Text Solution

    |

  16. How will you determine the direction of torque?

    Text Solution

    |

  17. Which component of torque is responsible for the rotation motion about...

    Text Solution

    |

  18. Give the formula for the moment of couple.

    Text Solution

    |

  19. What is the physical quantity of the time rate of the angular momentum...

    Text Solution

    |

  20. What is a rigid body ? Explain the differences between rigid body and ...

    Text Solution

    |