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Force & Law of motion #2 || Shashaank Blogspot

 Very short Answer Type (1 Mark) 1. What is force? What are its effects on a body? What is its unit? 2. What are balanced and unbalanced force ? 3. The earth attracts an apple with a force say 1.5 N. If this is the action force, how much is the reaction force? Who exerts this reaction force? On which body does this reaction force act? 4. What is the definition of 1 Newton? 5. A man while getting off a moving train is liable to fall. Why ? 6. Give two examples each of situation in which you push or pull to change the state of motion of objects? 7. Give two example of situation in which applied force cause a change in the shape of an object? 8. Fill in the blanks in the following statements (A) To draw water from a well we have ______________ at the rope (B) A charged body ________an uncharged body towards it.. 9. A rocket has been fired upwards to launch a satellite in its orbits. Name the two forces acting on the rocket immediately after leaving the launching pad. 10. What is the S...

Force & Law of motion #1 || Shashaank Blogspot

 1. A ball of dough is rolled into a flat chapatti. Name the force exerted to change the shape of the dough. Ans. Muscular force. 2. Where do we apply a force while walking? Ans. While walking we apply force on the ground. 3. A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction? Ans. Towards east. 4. During dry weather, clothes made of synthetic fibre often stick to the skin. Which type of force is responsible for this phenomenon? Ans. Electrostatic force. 5. While sieving grains, small pieces fall down. Which force pulls them down? Ans. Force of gravity. 6. Does force of gravity act on dust particles? Ans. Yes 7. A gas filled balloon moves up. Is the upward force acting on it larger or smaller than the force of gravity? Ans. Upward force is larger than the force of gravity. 8. Does the force of gravitation exist between two astronauts in space? Ans. Yes 9. A chapati maker is a machine which ...