EASY
9th CBSE
IMPORTANT
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Impulse is equal to change in momentum.

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Important Questions on Force and Laws of Motion

EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 17
The gun recoils on firing a bullet due to reaction force exerted by bullet.
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 18
Greater the mass, less is the inertia of motion but greater is the inertia of rest.
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 19
A body cannot have zero velocity but non zero momentum together.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 24
It is difficult to balance our body when we accidentally step on a peel of banana. Why?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 25
A bird hits the windscreen of a fast moving car and falls on the bonnet. Which of the two, bird or car, suffer a greater change in momentum?
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 26
A bowler runs a long distance before bowling from the bowling line. Why?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 27
A piece of paper can be jerked out from under a book quickly without moving the book. Why?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 9 - Force and Laws of Motion>ASSESS YOURSELF>Q 28
Why is your foot hurt more when you kick a stone than when you hit a football?