Home
Class 9
PHYSICS
A goalkeeper in the game of the football...

A goalkeeper in the game of the football move his hands backwards in order to catch the football coming towards him with force. Due to this the goalkeeper ………..

A

can apply more force to the football.

B

can increase the force acting on the hands by the football

C

can increase the rate of change of momentum.

D

can decrease the rate of change of momentum.

Text Solution

Verified by Experts

Can decrease the rate of change of momentum
Promotional Banner

Topper's Solved these Questions

  • FORCE AND LAWS OF MOTION

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS(Fill in the blanks :)|10 Videos
  • FORCE AND LAWS OF MOTION

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS(Fill in the blanks by selecting the correct alternative from those given in the bracket:)|10 Videos
  • FORCE AND LAWS OF MOTION

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS( Answer the following questions in very short :)|20 Videos
  • GRAVITATION

    KUMAR PRAKASHAN|Exercise ACTIVITY 10.4|2 Videos

Similar Questions

Explore conceptually related problems

While catching the ball, the cricketer takes his hand in backward direction

A thief is running away in a car with velocity of 20 m//s . A police jeep is following him, which is sighted by thief in his rear view mirror, which is a convex mirror of focal length 10 m. He observes that the image of jeep is moving towards him with a velocity of 1 cm//s . if the magnification of mirror for the jeep at that time is 1/10 . Find the actual speed of jeep, Assume the police's jeep is on the axis of the mirror.

By the term velocity of rain, we mean velocity with which raindrops fall relative to the ground. In absence of wind, raindrops fall vertically and in presence of wind raindrops fall obliqucly. Moreover raindrops acquire a constant terminal velocity due air resistance very quickly as they fall toward the carth. A moving man relative to himself observes an altered velocity of raindrops. Which is known as velocity of rain relative to the man. It is given by the following equation. vec(v)_(rm)=vec(v)_(r)-vec(v)_(m) A standstill man relative to himself observes rain falling with velocity, which is equal to velocity of the raindrops relative to the ground. To protect himself a man should his umbrella against velocity of raindrops relative to himself as shown in the following figure. Rain is falling vertically with velocity 80 cm/s. (a) How should you hold your umbrella ? (b) You start walking towards the east with velocity 60 cm/s. How should you hold umbrella ? (c) You are walking towards the west with velocity 60 cm/s. How should you hold your umbrella ? (d) You are walking towards the north with velocity 60 cm/s. How should you hold your umbrella? (e) You are walking towards the south with velocity 80 cm/s. How should you hold your umbrella ?

A ball of mass of 150g and velocity 12 ms^(-1) coming towards a batsman is hit by him with a force in such a way that the ball moves with velocity 30 ms^(-1) in the direction opposite to its original one. The time of contact between the ball and the bat is 0.01 s. Then the force applied on it by the batsman i s .......

A ball of mass of 150g and velocity 12 m/s coming towards a batsman is hit by him with a force in such a way that the ball moves with velocity 20 m/s in the direction opposite to its original one. The time of contact between the ball and the bat is 0.01 s. Then the force applied on it by the batsman i s .....

Two balls, each of m ass 80 g, moving towards each other with a velocity 5 msA^(1) , collide and rebound with the sam e speed. What will be the im pulse o f force on each ball due to the oth er ? W hat is th e valu e of mom entum of each ball

By the term velocity of rain, we mean velocity with which raindrops fall relative to the ground. In absence of wind, raindrops fall vertically and in presence of wind raindrops fall obliqucly. Moreover raindrops acquire a constant terminal velocity due air resistance very quickly as they fall toward the carth. A moving man relative to himself observes an altered velocity of raindrops. Which is known as velocity of rain relative to the man. It is given by the following equation. vec(v)_(rm)=vec(v)_(r)-vec(v)_(m) A standstill man relative to himself observes rain falling with velocity, which is equal to velocity of the raindrops relative to the ground. To protect himself a man should his umbrella against velocity of raindrops relative to himself as shown in the following figure. When you are standstill in rain, you have to hold umbrella vertically to protect yourself. (a) When you walk with velocity 90 cm/s, you have to hold your umbrella at 53^(@) above the horizontal. What is velocity of the raindrops relative to the ground and relative to you ? (b) If you walk with speed 160 cm/s, how should you hold your umbrella ?

KUMAR PRAKASHAN-FORCE AND LAWS OF MOTION-QUESTIONS AND ANSWERS( Choose the correct option from those given below each question :)
  1. What change would occur in acceleration. if the external force acting ...

    Text Solution

    |

  2. Which of the following physical quantity is scalar?

    Text Solution

    |

  3. If a force of 5N acts on an object of mass 2 kg for 2 s. then = what w...

    Text Solution

    |

  4. If a constant force is applied to an object of mass 0.9 kg in stationa...

    Text Solution

    |

  5. What is the momentum of an object of mass m, moving with a velocity v ...

    Text Solution

    |

  6. Momentum of an object is 28 kg ms^(-1). If its velocity is 1.4 ms^(-1)...

    Text Solution

    |

  7. A ball of mass m collides with the ground with velocity and then comes...

    Text Solution

    |

  8. When is the momentum of an object zero?

    Text Solution

    |

  9. kg ms^(-2) is the unit of which physical quan tity?

    Text Solution

    |

  10. On applying force in opposite direction of motion of an object, what e...

    Text Solution

    |

  11. On applying a force of 5N to an object, if acceleration equal to 10 ms...

    Text Solution

    |

  12. A goalkeeper in the game of the football move his hands backwards in o...

    Text Solution

    |

  13. Which of the following statements is not true for an object performing...

    Text Solution

    |

  14. According to the Newton's third law of motion action free and reaction...

    Text Solution

    |

  15. The object due to the property of Inertia can…..

    Text Solution

    |

  16. A traveller tosses a coin in upward direction during his journey in a ...

    Text Solution

    |

  17. An object of mass 2 kg is moving with constant velocity of 4 ms^(-1) o...

    Text Solution

    |

  18. On which principle of conservation does a rocket work?

    Text Solution

    |

  19. A tanker, moving with uniform speed on a horizontal linear road is fil...

    Text Solution

    |

  20. A batsman hits a cricket ball which then rolls on a level ground. Afte...

    Text Solution

    |