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 2025-26 academic session. Visit 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 | 2025-2026 |
Exe-3D Newton’s Third Law Very Short Answer Type
Ch-3 Laws of Motion Physics Class-9 ICSE Concise
Page 81
Que-1: State Newton’s third law of motion.
Ans: 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.
Que-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.
Que-3: The action and reaction both act simultaneously. Is this statement true?
Ans: Yes, action and reaction act simultaneously.
(Laws of Motion Exe-3D Very Short Class-9 ICSE)
Que-4: ‘The Action and reaction are equal in magnitude’. Is this statement true?
Ans: Yes, action and reaction are equal in magnitude.
Que-5: Comment on the statement ‘the sum of action and reaction on a body is zero’.
Ans: 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.
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