Home
Class 11
PHYSICS
In a reference frame a man A is moving w...

In a reference frame a man A is moving with velocity `(3hati-4hatj)ms^(-1)` and another man B is moving with velocity `(hati+hatj)ms^(-1)` relative to A. Find the actual velocity of B.

Text Solution

Verified by Experts

`vecv_(BA) = vecv_B - vecv_A and vecv_B = vecv_(BA) +vecvA`
or `vecv_B=[(hati+hatj)+(3hati-4hatj)]ms^(-1)=(4hati-3hatj)ms^(-1)`
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    MTG GUIDE|Exercise Topicwise Practice Questions (DISTANCE AND DISPLACEMENT)|2 Videos
  • KINEMATICS

    MTG GUIDE|Exercise Topicwise Practice Questions (SPEED AND VELOCITY)|9 Videos
  • GRAVITATION

    MTG GUIDE|Exercise AIPMT/NEET MCQS|32 Videos
  • LAWS OF MOTION

    MTG GUIDE|Exercise AIPMT /NEET (MCQ)|24 Videos

Similar Questions

Explore conceptually related problems

A particle of mass m moving with a velocity (3hati+2hatj)ms^-1 collides with another body of mass M and finally moves with velocity (-2hati+hatj)ms^-1 . Then during the collision

A palen mirror placed along xy plane is moving with velocity -3hati+5hatk-4hatk. A point in front of the plane mirror is moving with velocity -2hati-4hatj+4hatk. Find velocity of image [-2hati=14hatj+4hatk]

A boat is moving with a velocity 3hati - 4hatj w.r.t ground. The water in the river is moving with a velocity - 3hati -4hatj w.r.t ground. What is the relative velocity of boat w.r.t water.

A boat is moving with a velocity (3hati +hatj) with respect to ground. The water in the river is moving with a velocity -3hati - 4hatj with respect to ground. What is the relative velocity of boat with respect to river ?

A particle has an initial velocity (6hati+8hatj) ms^(-1) and an acceleration of (0.8hati+0.6hatj)ms^(-2) . Its speed after 10s is

A man A moves due to East with velocity 6 ms^(-1) and another man B moves in N-30^(@)E with 6 ms^(-1) . Find the velocity of B w.r.t. A.

A small sphere of mass m =1 kg is moving with a velocity (4hati-hatj) m//s . it hits a fixed smooth wall and rebounds with velocity (hati + 3hatj) m//s . The coefficient of restitution between the sphere and the wall is n//16 . Find the value of n .

A body of mass 0.8 kg has intial velocity (3hati-4hatj) ms^(-1) and final velocity (-6hatj+2hatk) ms^(-1) . Find change in kinetic energy of the body?

Consider a horizontal surface moving vertically upward with velocity 2ms^(-1) . A small ball of mass 2 kg is moving with velocity (2hati-2hatj)ms^(-2) If the coefficient of restitution and coefficient of friction are (1)/(2) and (1)/(3 respectively, find the horizontal velocity ("in "ms^(-1)) of the ball after the collision.

MTG GUIDE-KINEMATICS -AIPMT/ NEET MCQs
  1. In a reference frame a man A is moving with velocity (3hati-4hatj)ms^(...

    Text Solution

    |

  2. A particle move a distance x in time t according to equation x = (t + ...

    Text Solution

    |

  3. A ball is droped from a high rise platform t = 0 starting from rest. A...

    Text Solution

    |

  4. A particle has an initial velocity 3hati+4hatj and an accleration of 0...

    Text Solution

    |

  5. Six vectors, veca through vecf have the magnitudes and directions in...

    Text Solution

    |

  6. The speed of a projectile at its maximum height is half of its initial...

    Text Solution

    |

  7. A particle moves in x-y plane according to ru le x=a sin omegat and y=...

    Text Solution

    |

  8. A boy standing at the top of a tower of 20m of height drops a stone. A...

    Text Solution

    |

  9. A particle moves in a circle of radius 5 cm with constant speed and ti...

    Text Solution

    |

  10. A missile is fired for maximum range with an initial velocity of 20m//...

    Text Solution

    |

  11. A body is moving with velocity 30 m//s towards east. After 10 s its ve...

    Text Solution

    |

  12. A projectile is fired at an angle of 45^(@) with the horizontal. Eleva...

    Text Solution

    |

  13. A particle covers half of its total distance with speed v1 and the res...

    Text Solution

    |

  14. The horizontal range and the maximum height of a projectile are equal....

    Text Solution

    |

  15. A particle has initial velocity (2 vec(i)+3 vec(j)) and acceleration (...

    Text Solution

    |

  16. The motion of a particle along a straight line is described by equatio...

    Text Solution

    |

  17. A stone falls freely under gravity. It covered distances h1, h2 and h3...

    Text Solution

    |

  18. a projectile is fired from the surface of the earth with a velocity of...

    Text Solution

    |

  19. A particle is moving such that its position coordinates (x, y) are (2m...

    Text Solution

    |

  20. A particle of unit mass undergoes one-dimensional motion such that its...

    Text Solution

    |

  21. A ship A is moving westwards with a speed of 10 km h^(-1) and a ship B...

    Text Solution

    |