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1. Define Rest and Motion. :: Rest (āĻ¸ā§āĻĨāĻŋā§°) āφ⧰⧁ Motion (āĻ—āϤāĻŋ)-ā§° āϏāĻ‚āĻœā§āĻžāĻž āϞāĻŋāĻ–āĻžāĨ¤

Ans / āωāĻ¤ā§āϤ⧰



  • Rest: An object is at rest if it does not change its position with time.(āϝāĻŋ āĻŦāĻ¸ā§āĻ¤ā§ā§ąā§‡ āϏāĻŽāϝāĻŧā§° āϞāϗ⧇ āϞāϗ⧇ āύāĻŋāϜ⧰ āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āύāϕ⧰⧇, āϤāĻžāĻ• Rest āĻŦā§‹āϞāĻž āĻšāϝāĻŧāĨ¤)

  • Motion: An object is in motion if it changes its position with time.(āϝāĻŋ āĻŦāĻ¸ā§āĻ¤ā§ā§ąā§‡ āϏāĻŽāϝāĻŧā§° āϞāϗ⧇ āϞāϗ⧇ āύāĻŋāϜ⧰ āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āϕ⧰⧇, āϤāĻžāĻ• Motion āĻŦā§‹āϞāĻž āĻšāϝāĻŧāĨ¤)


2. Differentiate between Rest and Motion. (Rest (āĻ¸ā§āĻĨāĻŋā§°) āφ⧰⧁ Motion (āĻ—āϤāĻŋ)-ā§° āĻŽāĻžāϜāϤ āĻĒāĻžā§°ā§āĻĨāĻ•ā§āϝ āϞāĻŋāĻ–āĻžāĨ¤)

Ans / āωāĻ¤ā§āϤ⧰

1. Definition / āϏāĻ‚āĻœā§āĻžāĻž



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): No change in position. (āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āύāϕ⧰⧇āĨ¤)

  • Motion (āĻ—āϤāĻŋ): Changes position with time. (āϏāĻŽāϝāĻŧā§° āϞāϗ⧇ āϞāϗ⧇ āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āϕ⧰⧇āĨ¤)


2. Position / āĻ¸ā§āĻĨāĻžāύ



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): The object's position remains the same. (āĻŦāĻ¸ā§āϤ⧁āĻŸā§‹ā§° āĻ¸ā§āĻĨāĻžāύ āĻāϕ⧇āχ āĻĨāĻžāϕ⧇āĨ¤)

  • Motion (āĻ—āϤāĻŋ): The object's position changes. (āĻŦāĻ¸ā§āϤ⧁āĻŸā§‹ā§° āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āĻšāϝāĻŧāĨ¤)


3. Movement / āĻ—āϤāĻŋ



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): Object remains stationary. (āĻŦāĻ¸ā§āϤ⧁ āĻ¸ā§āĻĨāĻŋā§° āĻšā§ˆ āĻĨāĻžāϕ⧇āĨ¤)

  • Motion (āĻ—āϤāĻŋ): Object keeps moving. (āĻŦāĻ¸ā§āϤ⧁ āϚāϞāĻŋ āĻĨāĻžāϕ⧇āĨ¤)


4. Time / āϏāĻŽāϝāĻŧ



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): No change in position with time. (āϏāĻŽāϝāĻŧā§° āϞāϗ⧇ āϞāϗ⧇ āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āύāϕ⧰⧇āĨ¤)

  • Motion (āĻ—āϤāĻŋ): Position changes with time. (āϏāĻŽāϝāĻŧā§° āϞāϗ⧇ āϞāϗ⧇ āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āϕ⧰⧇āĨ¤)


5. Example / āωāĻĻāĻžāĻšā§°āĻŖ



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): Book on a table. (āĻŸā§‡āĻŦ⧁āϞ⧰ āĻ“āĻĒā§°āϤ āĻĨāĻ•āĻž āĻ•āĻŋāϤāĻžāĻĒāĨ¤)

  • Motion (āĻ—āϤāĻŋ): Moving bus. (āϚāϞāĻŋ āĻĨāĻ•āĻž āĻŦāĻžāĻ›āĨ¤)


6. Nature / āĻĒā§ā§°āĻ•ā§ƒāϤāĻŋ



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): The object stays at one place. (āĻŦāĻ¸ā§āϤ⧁ āĻāϟāĻž āĻ āĻžāχāϤ⧇āχ āĻĨāĻžāϕ⧇āĨ¤)

  • Motion (āĻ—āϤāĻŋ): The object moves from one place to another. (āĻŦāĻ¸ā§āϤ⧁ āĻāϟāĻž āĻ āĻžāχ⧰ āĻĒā§°āĻž āφāύ āĻ āĻžāχāϞ⧈ āϝāĻžāϝāĻŧāĨ¤)


7. Observation / āĻĒā§°ā§āϝāĻŦ⧇āĻ•ā§āώāĻŖ



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): No movement is observed. (āϕ⧋āύ⧋ āĻ—āϤāĻŋ āĻĻ⧇āĻ–āĻž āύāĻžāϝāĻžāϝāĻŧāĨ¤)

  • Motion (āĻ—āϤāĻŋ): Movement is observed. (āĻ—āϤāĻŋ āϞāĻ•ā§āĻˇā§āϝ āϕ⧰āĻž āϝāĻžāϝāĻŧāĨ¤)


8. Simple Formula / āϏāĻšāϜ āϏ⧂āĻ¤ā§ā§°



  • Rest (āĻ¸ā§āĻĨāĻŋā§°): No Movement = No Change in Position (āĻ—āϤāĻŋ āύāĻžāχ = āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āύāĻžāχāĨ¤)

  • Motion (āĻ—āϤāĻŋ): Movement = Change in Position (āĻ—āϤāĻŋ āφāϛ⧇ = āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āĻšāϝāĻŧāĨ¤)


3. What is Force ? (Force (āĻŦāϞ) āĻŦ⧁āϞāĻŋāϞ⧇ āĻ•āĻŋ āĻŦ⧁āϜāĻž ?)


Ans / āωāĻ¤ā§āϤ⧰: A push or a pull is called Force. (āϠ⧇āϞāĻž āĻŦāĻž āϟāύāĻžāĻ• āĻŦāϞ (Force) āĻŦā§‹āϞāĻž āĻšāϝāĻŧāĨ¤


4. Explain Push and Pull with suitable examples. (āωāĻĒāϝ⧁āĻ•ā§āϤ āωāĻĻāĻžāĻšā§°āĻŖāϏāĻš Push (āϠ⧇āϞāĻž) āφ⧰⧁ Pull (āϟāύāĻž) āĻŦā§āϝāĻžāĻ–ā§āϝāĻž āϕ⧰āĻžāĨ¤)

Ans / āωāĻ¤ā§āϤ⧰



  • Push (āϠ⧇āϞāĻž): A force that moves an object away from us.Ex: Pushing a door, kicking a football. (āφāĻŽāĻžā§° āĻĒā§°āĻž āφāρāϤ⧰āϞ⧈ āĻŦāĻ¸ā§āϤ⧁ āϠ⧇āϞāĻŋ āύāĻŋāϝāĻŧāĻž āĻŦāϞāĨ¤ āωāĻĻāĻžāĻšā§°āĻŖ: āĻĻā§°ā§āϜāĻž āϠ⧇āϞāĻž, āĻĢ⧁āϟāĻŦāϞāϤ āϞāĻžāĻĨāĻŋ āĻŽā§°āĻžāĨ¤)

  • Pull: A force that brings an object toward us. Ex: Pulling a drawer, dragging a bag.(āĻŦāĻ¸ā§āϤ⧁ āφāĻŽāĻžā§° āĻĢāĻžāϞ⧇ āϟāĻžāύāĻŋ āĻ…āύāĻž āĻŦāϞāĨ¤ āωāĻĻāĻžāĻšā§°āĻŖ: āĻĄā§ā§°āϝāĻŧāĻžā§° āϟāύāĻž, āĻŦ⧇āĻ— āϟāĻžāύāĻŋ āύāĻŋāϝāĻŧāĻžāĨ¤)


5. Write any three effects of Force. āĻŦāϞ (Force)-ā§° āϝāĻŋāϕ⧋āύ⧋ āϤāĻŋāύāĻŋāϟāĻž āĻĒā§ā§°āĻ­āĻžā§ą āϞāĻŋāĻ–āĻžāĨ¤


Ans / āωāĻ¤ā§āϤ⧰



  1. Force can move an object. (āĻŦāϞ⧇ āĻŦāĻ¸ā§āϤ⧁ āϚāϞāĻžāĻŦ āĻĒāĻžā§°ā§‡āĨ¤)

  2. Force can stop a moving object. (āĻŦāϞ⧇ āϚāϞāĻŋ āĻĨāĻ•āĻž āĻŦāĻ¸ā§āϤ⧁ ā§°āĻ–āĻžāĻŦ āĻĒāĻžā§°ā§‡āĨ¤)

  3. Force can change the direction of an object. (āĻŦāϞ⧇ āĻŦāĻ¸ā§āϤ⧁⧰ āĻ—āϤāĻŋā§° āĻĻāĻŋāĻļ āϏāϞāύāĻŋ āϕ⧰āĻŋāĻŦ āĻĒāĻžā§°ā§‡āĨ¤)


6. Give two examples each of Rest and Motion. (Rest (āĻ¸ā§āĻĨāĻŋā§°) āφ⧰⧁ Motion (āĻ—āϤāĻŋ)-ā§° āĻĻ⧁āϟāĻžāĻ•ā§ˆ āωāĻĻāĻžāĻšā§°āĻŖ āϞāĻŋāĻ–āĻžāĨ¤)


Ans / āωāĻ¤ā§āϤ⧰


Rest (āĻ¸ā§āĻĨāĻŋā§°): i. Book on a table (āĻŸā§‡āĻŦ⧁āϞ⧰ āĻ“āĻĒā§°āϤ āĻĨāĻ•āĻž āĻ•āĻŋāϤāĻžāĻĒāĨ¤), ii. Parked bicycle.(ā§°āĻ–āĻžāχ āĻĨā§‹ā§ąāĻž āϚāĻžāχāϕ⧇āϞāĨ¤)


Motion (āĻ—āϤāĻŋ): i. Moving bus.(āϚāϞāĻŋ āĻĨāĻ•āĻž āĻŦāĻžāĻ›āĨ¤) ii. Running child.(āĻĻ⧌⧰āĻŋ āĻĨāĻ•āĻž āĻļāĻŋāĻļ⧁āĨ¤)


7.Give two examples each of Push and Pull. (Push (āϠ⧇āϞāĻž) āφ⧰⧁ Pull (āϟāύāĻž)-ā§° āĻĻ⧁āϟāĻžāĻ•ā§ˆ āωāĻĻāĻžāĻšā§°āĻŖ āϞāĻŋāĻ–āĻžāĨ¤)

Ans / āωāĻ¤ā§āϤ⧰

Push (āϠ⧇āϞāĻž): i. Pushing a door.(āĻĻā§°ā§āϜāĻž āϠ⧇āϞāĻžāĨ¤), ii. Kicking a football. (āĻĢ⧁āϟāĻŦāϞāϤ āϞāĻžāĻĨāĻŋ āĻŽā§°āĻžāĨ¤)

Pull (āϟāύāĻž): i. Pulling a drawer.(āĻĄā§ā§°āϝāĻŧāĻžā§° āϟāύāĻžāĨ¤), ii. Dragging a school bag.(āĻ¸ā§āϕ⧁āϞ āĻŦ⧇āĻ— āϟāĻžāύāĻŋ āύāĻŋāϝāĻŧāĻžāĨ¤

 

Short Notes


  • Rest = No change in position. (āĻ¸ā§āĻĨāĻŋā§° = āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āύāϕ⧰⧇āĨ¤)

  • Motion = Change in position with time. (āĻ—āϤāĻŋ = āϏāĻŽāϝāĻŧā§° āϞāϗ⧇ āϞāϗ⧇ āĻ¸ā§āĻĨāĻžāύ āϏāϞāύāĻŋ āϕ⧰⧇āĨ¤)

  • Force = Push or Pull. (āĻŦāϞ = āϠ⧇āϞāĻž āĻŦāĻž āϟāύāĻžāĨ¤)

  • Push = Away from us. (āϠ⧇āϞāĻž = āφāĻŽāĻžā§° āĻĒā§°āĻž āφāρāϤ⧰āϞ⧈āĨ¤)

  • Pull = Toward us. (āϟāύāĻž = āφāĻŽāĻžā§° āĻĢāĻžāϞ⧇āĨ¤)

  • Force can move, stop, or change the direction of an object. (āĻŦāϞ⧇ āĻŦāĻ¸ā§āϤ⧁ āϚāϞāĻžāĻŦ, ā§°āĻ–āĻžāĻŦ āĻŦāĻž āĻĻāĻŋāĻļ āϏāϞāύāĻŋ āϕ⧰āĻŋāĻŦ āĻĒāĻžā§°ā§‡āĨ¤)