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9th CBSE
IMPORTANT
Earn 100

Why do not the forces of action and reaction cancel each other?

Important Questions on Forces and Laws of Motion

EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 11
When two bodies X and Y collide with each other, X exerts a force of 5 N on Y towards east direction. What is the force exerted by Y on X? Justify your answer stating the law. 
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 12
When a person jumps out of a boat, the boat moves backward. Explain why?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 13
When a bullet is fired, it exerts an equal and opposite force on the gun. Yet hurt caused by the recoil of gun is much less than that by bullet. Give reason.
 
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 14
State Law of conservation of momentum.
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 15
What would happen if a fielder stops the fast-moving ball suddenly? Justify your answer.
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 16
State newton's third law
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 16
(b) In a collision between a heavier and a lighter body, how do the forces experienced by the two bodies compares?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 2 - Forces and Laws of Motion>Assignment>Q 17
While catching a fast moving ball, a fielder gradually pulls his hand backward. Give reason