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Very Short Question and Answers - Third Law of Motion


Q 1.
What does Newton's Third Law of Motion state?

Ans:

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.

Q 2.
Can you give an example of Newton's Third Law in everyday life?

Ans:

When you jump off a small boat, you push the boat backwards as you move forward.

Q 3.
How does Newton's Third Law relate to rocket propulsion?

Ans:

In rocket propulsion, the action of the rocket expelling gas downwards results in an equal and opposite reaction that propels the rocket upwards.

Q 4.
What are action and reaction forces?

Ans:

Action and reaction forces are pairs of forces that are equal in size, opposite in direction, and act on two different objects.

Q 5.
Is it possible for action and reaction forces to cancel each other out?

Ans:

No, action and reaction forces act on different objects, so they do not cancel each other out.

Q 6.
How can Newton's Third Law be observed when walking?

Ans:

When you walk, your foot pushes backward against the ground, and in response, the ground pushes you forward.

Q 7.
What happens to a swimmer pushing off the pool wall?

Ans:

The action of the swimmer pushing against the wall results in the wall pushing back, propelling the swimmer away.

Q 8.
What role does Newton's Third Law play in bird flight?

Ans:

When birds flap their wings downwards (action), the air pushes them upwards (reaction).

Q 9.
How does Newton's Third Law apply when a gun is fired?

Ans:

When the bullet is fired forward (action), the gun experiences an equal and opposite force pushing it backward (reaction), known as recoil.

Q 10.
What is a practical application of Newton's Third Law in sports?

Ans:

In football, when a player kicks the ball (action), the ball exerts an equal force back on the player's foot (reaction).

Q 11.
How does Newton's Third Law explain the behavior of a balloon?

Ans:

When air is released from a balloon (action), the balloon moves in the opposite direction (reaction).

Q 12.
In what way does Newton's Third Law apply to two ice skaters pushing off from each other?

Ans:

When one skater pushes off the other (action), both skaters move apart due to the reaction force exerted on each other.

Q 13.
How is Newton's Third Law relevant to vehicles in motion?

Ans:

As tires push down on the road (action), the road pushes back up, allowing the vehicle to move forward (reaction).

Q 14.
What does a lack of understanding of Newton's Third Law could lead to in safety?

Ans:

Ignoring Newton's Third Law can lead to misuse of everyday items, like improperly using seatbelts which can result in injury during a crash.

Q 15.
Why is it important to consider both forces in an action-reaction pair?

Ans:

Both forces are necessary to understand the complete effect of an interaction between two objects.

Q 16.
What distinguishes action and reaction forces from balanced forces?

Ans:

Action and reaction forces act on different bodies, whereas balanced forces act on the same body and can cancel each other out.

Q 17.
In terms of force, how does Newton's Third Law apply when performing a task?

Ans:

If you exert force to lift an object, the object exerts an equal force downwards during the lifting process.

Q 18.
How can we see Newton's Third Law in underwater diving?

Ans:

When a diver pushes off the wall of the pool (action), they move away from the wall (reaction) as a result.

Q 19.
What does Newton's Third Law suggest about the forces at work in a collision?

Ans:

In a collision, both objects exert equal and opposite forces on each other upon contact.

Q 20.
How does Newton's Third Law apply to a person sitting in a chair?

Ans:

As a person sits in a chair, they exert a downward force on the chair (action), and the chair exerts an equal upward force on the person (reaction).