EASY
9th CBSE
IMPORTANT
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Explain any three effects that can be produced by force with examples.

Important Questions on Test Papers 2

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q C
How does the gravitational force between two bodies changes if the distance between them is tripled? Explain.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q C
If the density of two planets is the same, but their radii are in the ratio of 1:2, prove that the ratio of accelerations due to gravity on their surfaces is also 1:2.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q C
The weight of a body is 49 N. What is its mass?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q C
If the force of the earth on the moon vanishes suddenly, what will be the path of the moon? Give reasons.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q D
How does the force of attraction between the two bodies depend upon their masses and distance between them? Rahul, a class IX student, thought that two bricks tied together would fall faster than a single one under the action of gravity. Do you agree with this hypothesis or not? Give reason for your answer.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q D
Draw velocity-time graph for a uniformly accelerated object. Derive second and third equations of motion by graphical method.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q D
State and verify the law of conservation of momentum.  
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 9 - Test Papers 2>TEST PAPERS>Q D
Define the terms 'mass' and 'weight'. Write their SI units. Distinguish between mass and weight.