Home
Class 12
PHYSICS
If vecv=(4hati+5hatj+6k) m/s and m=(2)/(...

If `vecv=(4hati+5hatj+6k)` m/s and `m=(2)/(7)kg` then find kinetic energy `(i.e. (1)/(2)mv^(2))`

Text Solution

Verified by Experts

The correct Answer is:
(i)`(7)/(16)H`
(ii)`(5)/(16)H`
(iii)`sqrt((Gh)/(2))`
Promotional Banner

Topper's Solved these Questions

  • RACE

    ALLEN |Exercise Basic Maths (NEWTONS LAWS OF MOTION)|49 Videos

  • RACE

    ALLEN |Exercise Basic Maths (FRICTION)|13 Videos

  • RACE

    ALLEN |Exercise Basic Maths (Units, Dimensions & Measurements)|37 Videos

  • NEWTONS LAWS OF MOTION

    ALLEN |Exercise EXERCISE-III|28 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN |Exercise Example|1 Videos

Similar Questions

Explore conceptually related problems

If vecv=(4hati+3hatj+5k) m/s and m=(2)/(7)kg then find kinetic energy (i.e. (1)/(2)mv^(2))

If vecv=(3hati+2hatj+6k) m/s and m=(2)/(7)kg then find kinetic energy (i.e. (1)/(2)mv^(2))

If veca=2hati-hatj-5hatk and vecb=hati+hatj+2hatk , then find scalar and vector product.

Two bodies of masses m_(1) and m_(2) have same linear momentum . The ratio of their kinetic energies (E_(1))/(E_(2)) will be ………

A car having mass 1000 kg is moving with speed of 36kmh^(-1) . Calculate its momentum and kinetic energy. (Verify the value of kinetic energy using E_(k)=p^(2)//2m . 'p' is momentum, how kinetic energy is equal E_(k)=p^(2)//2m ? Think)

Given vecF=(2hati-5hatj)and vecr=(10hati-6hatj) . then torque vectau is

If vecA= 6hati- 6hatj+5hatk and vecB= hati+ 2hatj-hatk , then find a unit vector parallel to the resultant of vecA & vecB .

If p=7hati-2hatj+3hatk and q=3hati+hatj+5hatk , then find the the magnitude of p-2q.

Motion of Mass Center in Vector Form A 2.0 kg particle has a velocity of vecv_1=(2.0hati-3.0hatj) m /s, and a 3.0 kg particle has a velocity vecv_2=(1.0hati+6.0hatj) m/s. (a) How fast is the center of mass of the particle system moving? (b) Find velocities of both the particles in centroidal frame.

ALLEN -RACE-Basic Maths (KINEMATICS)
  1. A body is dropped from the top of a tower and it covers a 80 m distanc...

    Text Solution

    |

  2. A ball is thrown upward from edge of a cliff with an intial velocity o...

    Text Solution

    |

  3. If vecv=(4hati+5hatj+6k) m/s and m=(2)/(7)kg then find kinetic energy ...

    Text Solution

    |

  4. A body is dropped from a tower. It covers 64% distance of its total he...

    Text Solution

    |

  5. A ball is projected in a manner such that its horizontal gange is n ti...

    Text Solution

    |

  6. A ball is projected from ground in such a way that after 10 seconds of...

    Text Solution

    |

  7. A body is projected at an angle of 45^(@) with horizontal with velocit...

    Text Solution

    |

  8. A body is projected from ground with velocity u making an angle theta ...

    Text Solution

    |

  9. A ball is thrown from a comer of room of length 20 m and height 5 m su...

    Text Solution

    |

  10. A hunter aims his gun and fires a bullet directly toward's a monkey si...

    Text Solution

    |

  11. An aeroplane is flyind horizontally at a height of 2 km and with a vel...

    Text Solution

    |

  12. Stone A is dropped but stone B and C are projected horizontally (u(C)g...

    Text Solution

    |

  13. Two particles move in a uniform gravitational field with an accelerati...

    Text Solution

    |

  14. A particle projected from origin moves in x-y plane with a velocity ve...

    Text Solution

    |

  15. A golfer standing on level ground hits a ball with a velocity of u=52m...

    Text Solution

    |

  16. Two equal forces are acting at a point with an angle of 60^(@) between...

    Text Solution

    |

  17. A projectile is given an initial velocity hati+2 hatj.The cartesin equ...

    Text Solution

    |

  18. A particle of mass 50 g is projected horizontally from the top of a to...

    Text Solution

    |

  19. L(1) metre train is moving with a velocity of v(1) m/s and another L(2...

    Text Solution

    |

  20. A 150 m long train is moving in north direction with a velocity of 5m/...

    Text Solution

    |