Home
Class 11
PHYSICS
A ball of mass 20 gram hits a wall at an...

A ball of mass `20` gram hits a wall at an angle of `45^(@)` with a velocity of `15m//s` If ball rebounds at `90^(@)` to the direction of incidence, calculate the impulse received by the ball.

Text Solution

Verified by Experts

The correct Answer is:
`0.42 kg ms ^(-1)`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION : FRICTION

    SL ARORA|Exercise Problems|17 Videos

  • Laws of Motion

    SL ARORA|Exercise Exercise|627 Videos

  • Mathematical tools

    SL ARORA|Exercise Exercise|20 Videos

Similar Questions

Explore conceptually related problems

A ball of mass 20 gram hits a smooth wall at an angle of 45^@) with a velocity of 15m//s If ball rebounds at 90^(@) to the direction of incidence, calculate the impulse received by the ball.

A ball of 0.20kg hits a wall at an angle of 45^(@) with a velocity of 25 ms^(-1) . If the rebounds at 90^(@) to the direction of incidence, calculate the change in momentum of the ball.

A ball of mass 500 gram strikes a wall with a velocity of 80 m/s and rebounds with the same velocity. If the tme of contact is 1/30 sec, then the force exerted by the ball on the wall is

A ball of mass 250 g moving with 20 m/s strikes a vertical wall and rebounds along the same line with a velocity of 15 m/s. If the time of contact is 0.1 s, the force exerted by the wall on the ball is

A ball of mass 0.1 kg is thrown against a wall. It strikes the wall normally with a velocity of 30 ms^(-1) and rebounds with a velocity of 20 ms^(-1) . Calculate the impulse of the force exerted by the wall.

A cricket ball of mass 0.5 kg strikes a circket bat normally with a velocity of 20" m s"^(-1) and rebounds with a velocity of 10" m s"^(-1) . The impulse of the force exerted by the ball on the bat is

A ball of mass 0.2kg strikes an obstacle and moves at 60^(@) to its original direction If its speed also changes from 20m//s to 10m//s , the magnitude of the impulse received by the ball is .

A ball of mass 3kg moving with a speed of 100 m/s, strikes a wall at an angle 60^(@) (as shown in figure). The ball rebounds at the same speed and remains in contact with the wall for 0.2 s, the force exerted by the ball on the wall is

A cricket ball of mass 0.2 kg moves with a velocity of 20 m/s and is brought to rest by a player in 0.1 s. Calculate the impulse of the ball and average force applied by the player.

SL ARORA-LAWS OF MOTION : FRICTION-Self Practice
  1. Two billiard balls each of mass 0 .05 kg moving in opposite directions...

    Text Solution

    |

  2. A machine gun has a mass of 20kg It fires 30g bullets at the rate of 4...

    Text Solution

    |

  3. A ball of mass 20 gram hits a wall at an angle of 45^(@) with a veloci...

    Text Solution

    |

  4. Two identical billiard balls striks a rigid wall with the same speed b...

    Text Solution

    |

  5. A force acting on a body of mass 2 kg varies with time as shown in fig...

    Text Solution

    |

  6. Fig. shows an estimated force-time graph for a base ball struck by a b...

    Text Solution

    |

  7. An elevator weighing 5000 kg is moving upward and tension in the sup...

    Text Solution

    |

  8. A body of 100 kg stands on a spring weighing machine inside a lift. Th...

    Text Solution

    |

  9. A woman weighing 50 kgf stands on a weighing machine placed in lift. W...

    Text Solution

    |

  10. A 75 kg man stands in a lift. What force does the floor does the floor...

    Text Solution

    |

  11. Find the appared weight of a man weighing 49 kg on earth, when he is s...

    Text Solution

    |

  12. A body of mass 15 kg is hung by a spring balance in a lift. What would...

    Text Solution

    |

  13. A mass of 10 kg is suspended from a string, the other end of which is ...

    Text Solution

    |

  14. The strings of a parachute can bear a maximum tension of 72 kg wt . By...

    Text Solution

    |

  15. A 70 kg man in sea is being lifted by a helicopter with the help of a ...

    Text Solution

    |

  16. An elevator and its load weigh a total of 800kg Find the tension T in ...

    Text Solution

    |

  17. A lift of mass 400 kg is hung by a wire. Calculate the tension in the ...

    Text Solution

    |

  18. A 30 g bullet leaves a rifle with a velocity of 300 ms^(-1) and the ri...

    Text Solution

    |

  19. A 40kg shell is flying at a speed of 72km//h It explodes into two piec...

    Text Solution

    |

  20. A gun weighing 10 kg fires a bullet of 30 g with a velocity of 330 ms^...

    Text Solution

    |