Home
Class 11
PHYSICS
Can kinetic energy be negative? Explain....

Can kinetic energy be negative? Explain.

Text Solution

Verified by Experts

No, kinetic energy is always positive. Mass and square of speed are both positive.
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER & ENERGY

    CENGAGE PHYSICS|Exercise Exercise 8.3|26 Videos

  • WORK, POWER & ENERGY

    CENGAGE PHYSICS|Exercise Exercise 8.4|16 Videos

  • WORK, POWER & ENERGY

    CENGAGE PHYSICS|Exercise Exercise 8.1|25 Videos

  • VECTORS

    CENGAGE PHYSICS|Exercise Exercise Multiple Correct|5 Videos

Similar Questions

Explore conceptually related problems

If angular momentum is conserved in a system whose moment of inertia is decreased, will its rotational kinetic energy be also conserved ? Explain.

the kinetic energy of the air is

(a) Can kinetic energy of a system be changed without changing its momentum ? (b) Can momentum of a system be changed without changing its kinetic energy?

Which of the following statemente is / are INCORRECT? (a) Mechanical energy is the sum of kinetic energy and potential energy. (b) Potential energy is a relative quantity. It depends on the choice of reference point. (c ) Kinetic energy must be non negative. (d) Potential energy must be postive.

Work || Kinetic energy

(a) What is the cause of kinetic energy possessed by a body? (b) can kinetic energy of a body ever be negative?

CENGAGE PHYSICS-WORK, POWER & ENERGY-Exercise 8.2
  1. The kinetic energy of a body is increased by 21%. What is the percenta...

    Text Solution

    |

  2. A particle of mass 0.5kg travels in a straight line with velocity v=ax...

    Text Solution

    |

  3. Can kinetic energy be negative? Explain.

    Text Solution

    |

  4. The kinetic energy of an object depends on the frame of reference in w...

    Text Solution

    |

  5. You are reshelving books in a library. You lift a book from the floor ...

    Text Solution

    |

  6. What is the reason that we burn out our body fat only when we walk bri...

    Text Solution

    |

  7. Figure shows three paths connecting points a and b, A single force F d...

    Text Solution

    |

  8. The potential energy of a conservative force field is given by U=ax^...

    Text Solution

    |

  9. A particle moves in x-y plane in figure under the influence of a frict...

    Text Solution

    |

  10. A single conservative force acting on a particle varies as vecF=(-Ax+B...

    Text Solution

    |

  11. A potential energy function for a two-dimensional force is the form U=...

    Text Solution

    |

  12. For the potential energy curve shown in figure. (a) Determine whethe...

    Text Solution

    |

  13. Is it possible exert a force which does work on a body without changin...

    Text Solution

    |

  14. The kinetic friction force acting on a sliding body moving in a straig...

    Text Solution

    |

  15. A single conservative force acting on a particle varies as vecF=(-Ax+B...

    Text Solution

    |

  16. A block of mass m is placed at the bottom of a massless smooth wedge w...

    Text Solution

    |

  17. A particle is projected in gravity with a speed v0. Using W-E theorem,...

    Text Solution

    |

  18. A block is released from rest from a height h=5m. After travelling thr...

    Text Solution

    |

  19. A block of mass m is connected with a rigid wall by light spring of st...

    Text Solution

    |

  20. Two blocks of masses m1 and m2 inter connected by a spring of stiffnes...

    Text Solution

    |