Home
Class 9
PHYSICS
Solve the following examples: If the en...

Solve the following examples:
If the energy of a ball falling from a height of 10 metres is reduced by `40%`, how high will it rebound?

Text Solution

Verified by Experts

6 m
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    BAL BHARTI|Exercise Use your brain power|2 Videos

  • STUDY OF SOUND

    BAL BHARTI|Exercise USE YOUR BRAIN POWER|4 Videos

Similar Questions

Explore conceptually related problems

If the energy of a ball falling from a height of 10 minutes is reduced by 40% , how high will it rebound ?

If the energy of a ball falling from a height of 20 m is reduced by 60% , how high will it rebound?

Solve the following examples / numerical problems: A metal ball of mass 5 kg falls from a height of 490 m. How much time will it take to reach the ground ?

Solve the following examples: How many molecules of water are there in 1 g of wate (H_2 O) ?

Solve the following examples: If the energy required to move a body of mass 1 kg from the ground level to a certain height is 49 J, find the height.

Solve the following examples / numerical problems: An iron ball of mass 3 kg is released from a height of 125 m and falls freely to the ground. Assuming that the value of g is 10 m/s^2, calculate (a) the time taken by the ball to reach the ground (b) the velocity of the ball on reaching the ground.

Solve the following examples: A body of mass 1 kg has kinetic energy 2 J. Find the velocity of the body.

Solve the following examples: Calculate the following : Mass of 2.4 times 10^(24) atoms of iron.

Solve the following examples: Find the mass of water lifted by a pump of power 0.5 hp to a height of 5m in 98 seconds.

BAL BHARTI-WORK AND ENERGY-Exercises
  1. Choose one or more alternatives: Which of the forces involved in drag...

    Text Solution

    |

  2. Choose one or more alternatives: Power is a measure of the ………

    Text Solution

    |

  3. Choose one or more alternatives: While dragging or lifting an objectm...

    Text Solution

    |

  4. The potential energy of your body isleast when you are……

    Text Solution

    |

  5. The total energy of an object falling freely towards the ground………………....

    Text Solution

    |

  6. If we increase the velocity of a car moving on a flat surface to 4 tim...

    Text Solution

    |

  7. The work done on an object does not depend on…..

    Text Solution

    |

  8. Questions based on paragraph Study the following activity and answer ...

    Text Solution

    |

  9. Questions based on paragraph Study the following activity and answer ...

    Text Solution

    |

  10. Study the following activity and answer the questions: Now take two b...

    Text Solution

    |

  11. Study the following activity and answer the questions: At the moment ...

    Text Solution

    |

  12. Study the following activity and answer the questions: As the balls r...

    Text Solution

    |

  13. Study the following activity and answer the questions: Why do the ball...

    Text Solution

    |

  14. Study the following activity and answer the questions: What is the for...

    Text Solution

    |

  15. Questions based on paragraph Study the following activity and answer ...

    Text Solution

    |

  16. Solve the following examples: An electric pump has 2 kW power. How mu...

    Text Solution

    |

  17. Solve the following examples: If a 1200 W electric iron is used daily...

    Text Solution

    |

  18. Solve the following examples: If the energy of a ball falling from a ...

    Text Solution

    |

  19. The velocity of a car increases from 54 km/hr to 72 km/hr. How much is...

    Text Solution

    |

  20. Solve the following examples: Ravi applied a force of 10 N and moved ...

    Text Solution

    |