Home
Class 9
PHYSICS
Avinash is moving with the velocity 8ms^...

Avinash is moving with the velocity `8ms^(-1)` against the frictional force 10 N acting on him and Kapil is moving with the velocity `3ms^(-1)` against the frictional force 25 N acting on him. Whos power would be more?

Text Solution

Verified by Experts

The correct Answer is:
Avinash's power would be more.

Power P = (Force F) (Velocity v) use this formula.
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    KUMAR PRAKASHAN|Exercise QUESTION & ANSWER (TEXUTAL EXAMPLES/NUMERICALS)|18 Videos
  • SOUND

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS (Additional numericals for practice)|16 Videos

Similar Questions

Explore conceptually related problems

An object of mass 2 kg is moving with constant velocity of 4 ms^(-1) on a frictionless horizontal surface. If the object is to be kept moving with the same velocity, the magnitude of the external force required would be ....... N.

Engine of a car of mass 1500kg, keeps car moving with constant velocity 5ms^(-1) . If frictional force is 1000 N, power of engine is …………..

What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10 ms^(-1)

An object of mass 5 kg is moving with a velocity of 10 ms ^(-1). A force is aplied so that in 20 s, it attains a velocity of 25 ms ^(-1). What is the force aplied on the object ?

A block of mass 10 kg is moving on a rough surface as shown in figure. The frictional force acting on block is :-

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.

KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (ADDITIONAL NUMERICALS FOR PRACTICE)
  1. In a residence 4 tubelights each of 40W are operated daily for 5 hour ...

    Text Solution

    |

  2. A rocket is moving in upward direction with the velocity v, suddenly i...

    Text Solution

    |

  3. Avinash is moving with the velocity 8ms^(-1) against the frictional fo...

    Text Solution

    |

  4. The power of a water pump is 2 kW. How much amount of water can it rai...

    Text Solution

    |

  5. Suppose the weight of a man on the planet A is half than that on the e...

    Text Solution

    |

  6. A ball is falling freely from the height 10 m. On striking the ground ...

    Text Solution

    |

  7. The power of an electric iron is 1200 W. It is used daily for 30 minut...

    Text Solution

    |

  8. The momentam of a light and heavy objects are same. Find the ratio of ...

    Text Solution

    |

  9. Car A of mass 1000 kg moves on a horizontal straight road with speed 3...

    Text Solution

    |

  10. A girl of mass 35 kg is sitting in a trolley of mass 5 kg. By applying...

    Text Solution

    |

  11. Four men lift a 250 kg box to a height of 1 m and hold it without rais...

    Text Solution

    |

  12. The height of 'Jog fall' in Karnataka state is 250 m high. 2000 ton wa...

    Text Solution

    |

  13. A man works with the constant power 100 W. How much mass of an object ...

    Text Solution

    |

  14. A car-engine of mass 150 kg spends 500 W power for 1 kg mass. How much...

    Text Solution

    |

  15. A butterfly of mass 1.0 g moves upward against the gravitational force...

    Text Solution

    |

  16. A body of mas 15 kg undergoes downward displacement of 40 m under the ...

    Text Solution

    |

  17. An object of mass 120g is taken upward at the height 5 m, then ………….. ...

    Text Solution

    |

  18. At what speed a person having 60 kg mass should run to acquire 750 J k...

    Text Solution

    |

  19. Kinetic energy of a car, having mass 1000 kg is 1,12,500 J. Driver app...

    Text Solution

    |

  20. Hetasvi, having her own mass 50 kg, climbs 20 m height along with 30 k...

    Text Solution

    |