Question

Name and state the action and reaction in the following cases:-
(a) firing a bullet from a guns.
(b) hammering a nail.
(c) a book lying on a table.
(d) a moving rocket.
(e) a person walking on the floor.
(f) a morning train colliding with a stationary train.

Answer 1

a) Action - Firing bullet
Reaction - Recoiling of gun

b) Action - Hitting hammer on nail
Reaction - the nail exerts equal force on
hammer.
c) Action - book exerts force on the table due to gravity.
Reaction- the table exerts equal force on the book.

d) Action - the fuel burns and releases large amount of force in opposite direction of the movement of rocket.
Reaction- the burnt fuel exerts equal pressure on the rocket and rocket move in upward direction.

e) Action - the person exerts force on the floor
Reaction - the floor exerts equal force on the legs of person due to which he move forward.

f) Action - the train collides to stationary train by applying large amount of foce due to it's large momentum.
Reaction - the stationary train also exerts equal force on the moving train which opposes the motion of the moving train.





- Abhina¥ $ingh

Answer 2

In a rocket, fuel is burnt inside the rocket and the burnt gases at high pressure and temperature are expelled out of the rocket through the nozzle . (Action)is the force exerted by the rocket on gases.

The outgoing gases exert an equal and opposite force (reaction)