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CBSE
Class 9
Science
Exploration
How Forces Affect Motion
Question Bank

When a fish swims by pushing w...

Single Answer MCQ
Q-00171905

When a fish swims by pushing water backwards, what principle is demonstrated?

1

Conservation of energy

2

Newton's first law

3

Newton's third law

4

Frictional force

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Q1.

What is the primary effect of friction on an object in motion?

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If a box on the floor is pushed and does not move, what factor is primarily at play?

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Q3.

What happens to the frictional force when the surface becomes smoother?

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Q4.

What is the role of the normal force when an object is at rest on a surface?

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