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CBSE Class 9 Gravitation — practice questions — page 2

Explore 50 free Gravitation questions in CBSE Class 9 Science. Open each question or exercise to read its content, reference answers and available explanation.

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Gravitation questions and exercises with answers

Showing questions 31–50 of 50.

The value of g depends on the object's:Read the answer and worked solution →For quick estimation, g may be taken as:Read the answer and worked solution →One newton produces what acceleration on a 1 kg mass?Read the answer and worked solution →The weight of a 1 kg mass on the Earth is about:Read the answer and worked solution →Holding a 100 g mass, your palm pushes up with about:Read the answer and worked solution →Weight differs from object to object because they differ in:Read the answer and worked solution →An object floating in a liquid also feels the:Read the answer and worked solution →The weight of a 5 kg object on the Earth is about:Read the answer and worked solution →Two objects of different mass are dropped together. They fall with:Read the answer and worked solution →Momentum of an object is the product of mass and:Read the answer and worked solution →A hanging object is held by the thread against the pull of:Read the answer and worked solution →Weight is a force, so it is measured in:Read the answer and worked solution →Match the gravity termRead the answer and worked solution →Mass or weight?Read the answer and worked solution →Gravity numbersRead the answer and worked solution →True or false about gravityRead the answer and worked solution →Pick the right valueRead the answer and worked solution →Complete the weight ruleRead the answer and worked solution →Sort the forces on an objectRead the answer and worked solution →Gravitation bingoRead the answer and worked solution →

Worked practice questions

The value of g depends on the object's:

  1. Nothing at all
  2. Mass in kilos
  3. Colour of it
  4. Height of drop
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Correct answer: A. Nothing at all

1. A heavy and a light object fall alike in the absence of air. 2. The pull grows with mass but so does the resistance to speeding up. 3. The acceleration due to gravity does not depend on the mass. 4. So the answer is nothing at all. _Source: syllabus Science, Ch 6 'How Forces Affect Motion'_

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For quick estimation, g may be taken as:

  1. 80 m per s2
  2. 10 m per s2
  3. 20 m per s2
  4. 50 m per s2
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Correct answer: B. 10 m per s2

1. The exact value is 9.8 metres per second squared. 2. Rounding it makes mental arithmetic easier. 3. For quick estimations one can take g as 10. 4. So the answer is 10 m per s2. _Source: syllabus Science, Ch 6 'How Forces Affect Motion'_

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One newton produces what acceleration on a 1 kg mass?

  1. 5 m per s2
  2. 2 m per s2
  3. 1 m per s2
  4. 9 m per s2
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Correct answer: C. 1 m per s2

1. The newton is defined through the second law. 2. It uses a mass of one kilogram. 3. One newton gives that mass an acceleration of 1 m per s2. 4. So the answer is 1 m per s2. _Source: syllabus Science, Ch 6 'How Forces Affect Motion'_

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