Laws of Motion Exe-3D Very Short Answer Physics Class-9 ICSE Selina Publishers

Laws of Motion Exe-3D Newton’s Third Law Very Short Answer Type for Class-9 ICSE Concise Physics. There is the solutions of Very short Answer type Questions of your latest textbook which is applicable in 2023-24 academic sessionVisit official Website CISCE for detail information about ICSE Board Class-9.

Laws of Motion Exe-3D Newton’s Third Law Very Short Answer 

(ICSE Class – 9 Physics Concise Selina Publishers)

Board ICSE
Class 9th
Subject Physics
Writer / Publication Concise selina Publishers
Chapter-3 Laws of Motion
Exe – 3D Newton’s Third Law
Topics Solution of Exe-3(D) Very Short Answer Type
Academic Session 2023-2024

Exe-3D Newton’s Third Law Very Short Answer Type

Ch-3 Laws of Motion Physics Class-9 ICSE Concise

Page 81

Question 1. State Newton’s third law of motion.

Answer:

According to Newton’s third law of motion, to every action there is always an equal and opposite reaction. The action and reaction act simultaneously on two different bodies.

Question 2. Name and state the action and reaction in the following cases:

(a) Firing a bullet from a gun,

 (b) Hammering a nail,

(c) A book lying on a table,

 (d) A moving rocket,

(e) A person moving on the floor,

(f) A moving train colliding with a stationary train.

Answer:

(a) Action: Force exerted on the bullet.

Reaction: Recoil experienced by the gun.

(b) Action: The force exerted by the hammer on the nail.

Reaction: The force applied by the nail on the hammer.

(c) Action: Weight of the book acting downwards.

Reaction: Force acted by the table upwards.

(d) Action: Force exerted by the rocket on the gases backwards.

Reaction: Force exerted by outgoing gases on the rocket in forward direction.

(e) Action: Force exerted by the feet on the ground in backward direction.

Reaction: Force exerted by the ground on feet in forward direction.

(f) Action: Force exerted by a moving train on a stationary train.

Reaction: Force exerted by a stationary train on a moving train.

Question 3. The action and reaction both act simultaneously. Is this statement true?

Answer:

Yes, action and reaction act simultaneously.

(Laws of Motion Exe-3D Very Short Class-9 ICSE)

Question 4. ‘The Action and reaction are equal in magnitude’. Is this statement true?

Answer:

Yes, action and reaction are equal in magnitude.

Question 5. Comment on the statement ‘the sum of action and reaction on a body is zero’.

Answer:

The given statement is wrong.

Reason: According to Newton’s third law of motion, the action and reaction act simultaneously on different bodies. Hence they do not cancel each other.

—  : End of Laws of Motion Exe-3D Newton’s Third Law Very Short Answer Type  Solutions :–

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