Home
Class 11
PHYSICS
Assertion : No force is required to move...

Assertion : No force is required to move a body unifromly along a straight line
Reason : Because `F = ma = m (0) =0` .

A

If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B

If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion

C

If Assertion is ture but the Reason is false

D

If both, Assertion and Reason are false

Text Solution

Verified by Experts

The correct Answer is:
a

Both the assertion and reason are true only when there are no forces opposing the motion of the body .
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    PRADEEP|Exercise Integer Type Questions|7 Videos
  • KINEMATICS

    PRADEEP|Exercise 1 NCERT Comprehension|4 Videos
  • MATHEMATICAL TOOLS

    PRADEEP|Exercise Fill in the blanks|5 Videos

Similar Questions

Explore conceptually related problems

No force is required to move a body uniformly along a straight line. Comment.

Is some force required to move a body uniformly along a circle?

According to Newton s second law of motion F =ma where F is the force required to produce an acceleration a in a body of mass m If a = 0 then F = 0 no external force is required to move a body uniformly along a straight line If a force F acts on a body for t seconds the effect of the force is given by Impulse =F xx t =change in linear momentum of the body Average force exerted by the bat is .

According to Newton s second law of motion F =ma where F is the force required to produce an acceleration a in a body of mass m If a = 0 then F = 0 no external force is required to move a body uniformly along a straight line If a force F acts on a body for t seconds the effect of the force is given by Impulse =F xx t = change in linear momentum of the body The retardation of the ball is .

According to Newton s second law of motion F =ma where F is the force required to produce an acceleration a in a body of mass m If a = 0 then F = 0 no external force is required to move a body uniformly along a straight line If a force F acts on a body for t seconds the effect of the force is given by Impulse =F xx t = change in linear momentum of the body A cricket ball of mass 150g is moving with a velocity of 12m//s and is hit by a bat so that the ball is turned back with a velocity of 20m//s if duration of contact between the ball and the bat is 0.01sec The impulse of the force is .

Assertion : Force is required to move a body uniformly along a circle. Reason : When the motion is uniform, acceleration is zero.

If a force is applied at an angle to a body moving along a straight line:

Assertion : Linear momentum of a body changes even when it is moving uniformly in a circle. Reason : Force required to move a body uniformly along a straight line is zero.

PRADEEP-LAWS OF MOTION-Assertion- Reason Type Questions
  1. Assertion : A person receive more injury when he falls from a height o...

    Text Solution

    |

  2. Assertion : Slope of momentum - time graph gives acceleration Reason...

    Text Solution

    |

  3. Assertion : The work done in bringing a body down from the top to the ...

    Text Solution

    |

  4. Assertion: A rocket moves forward by pushing the surrounding air backw...

    Text Solution

    |

  5. Assertion : No force is required to move a body unifromly along a stra...

    Text Solution

    |

  6. Assertion : A rocket in flight is an illustration of projectile Reas...

    Text Solution

    |

  7. Assertion : A body droped from a given height and another body project...

    Text Solution

    |

  8. Assertion : A body can be at rest even when it is under the action of ...

    Text Solution

    |

  9. Assertion: Friction is a self-adjusting force. Reason: Friction does...

    Text Solution

    |

  10. Assertion : The value of dynamic friction is less than the limiting fr...

    Text Solution

    |

  11. Assertion : Force of friction depends on the actual area of contact ...

    Text Solution

    |

  12. Assertion : Thrust on a rocket depends only on velocity of exhaust gas...

    Text Solution

    |

  13. Assertion : A horse cannot run a cart in empty space Reason : A cart...

    Text Solution

    |

  14. Assertion : A force of 1kg f produces an acceleration of 1m//s^(2) in ...

    Text Solution

    |

  15. Assertion : A ball of mass 100g hits a bat with a speed of 72km//hr an...

    Text Solution

    |

  16. Assertion : The maximum speed with which a vehicle can go round a leve...

    Text Solution

    |

  17. Assertion : Centripetal and centrifugal forces always cancle eachother...

    Text Solution

    |