9th Class Physics Chapter 3 online Short Questions preparation with Answers

9th Class Physics Chapter 3 Online Preparation

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Online Short Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

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Total Questions10
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Physics (New Book) - 9th Class Physics English Medium Chapter 3 Preparation

Question # 1

What would happen if all friction suddenly disappears?

Ans 1: If all friction suddenly disappears, everyone dies because you can'twalk or do anything.

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Prepare Complete Set Wise Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

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Set 2

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Set 3

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Set 4

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Set 5

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Set 7

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Set 8

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Set 9

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Set 10

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9th Class Physics English Medium Chapter 3 Preparation - Set 1

Question # 1

What would happen if all friction suddenly disappears?

Ans 1: If all friction suddenly disappears, everyone dies because you can'twalk or do anything.

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9th Class Physics English Medium Chapter 3 Preparation - Set 2

Question # 1

What is meant by dynamics?

Ans 1: The branch of mechanics that deals with study of motion of an object and the cause of its motion is called dynamics.

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9th Class Physics English Medium Chapter 3 Preparation - Set 3

Question # 1

Writer two disadvantages and two disadvantages of friction.

Ans 1: Advantages of friction: It cannot not written if there would be no friction between paper and pencil
Friction enables us to walk on ground We cannot run on a slippery ground because it offers very little friction.
Ans 2: Disadvantages of friction: Friction is undesirable when moving with high speeds because it opposes the motion and thus limits the speed of moving objects
Most of our useful energy is lost as heat and sound due to the friction between various moving parts of machines.

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9th Class Physics English Medium Chapter 3 Preparation - Set 4

Question # 1

What is the law of inertia?

Ans 1: Since Newton's first law of motion deals with the inertial property of matter, there fore ,Newton's first law of motion is also known as law of inertia stated as. A body continues its state of rest or of uniform motion in a straight line provided no net force asct on it.

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9th Class Physics English Medium Chapter 3 Preparation - Set 5

Question # 1

Why spinner of washing machine is made to spin at very high speed

Ans 1: Because when it spins at high speed the water from wet clothes is forces out through hole due to lack of centripetal force.

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9th Class Physics English Medium Chapter 3 Preparation - Set 6

Question # 1

Define sliding friction and rolling friction?

Ans 1: Sliding friction is also known as kinetic friction or moving friction and is defiend as the force that is required to keep a surface sliding along another surface.
Rolling friction
Resistance to motion by bodies that are in rolling contact

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9th Class Physics English Medium Chapter 3 Preparation - Set 7

Question # 1

Define Tension in a string:

Ans 1: The force acting along a string is called tension. Its unit is newton . It is represented by 'T'

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9th Class Physics English Medium Chapter 3 Preparation - Set 8

Question # 1

Difference between Mass and Weight?

Ans 1: Mass
1- Mass of a body is the quantity of matter possessed by the body
2- It is a scalar quantity
Ans 2: Weight:
1- The weight of the body is equal to the force with which earth attracts it
2- It is a vector quantity.
Ans 3:

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9th Class Physics English Medium Chapter 3 Preparation - Set 9

Question # 1

Differentiate between sliding friction and rolling friction.

Ans 1: Sliding friction: The frictional force produced between a body and surface when it rotates on the surface is called sliding friction.
Ans 2: Rolling friction: The friction produced by rolling the surface of one object on the other is called rolling friction.

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9th Class Physics English Medium Chapter 3 Preparation - Set 10

Question # 1

What will be the tension in a rope pulled from its ends by two opposite force 100N each

Ans 1: It will be 100N because string is in equilibrium so applied force and reaction force of string of string that is tension are equal.

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Physics

3rd Unit

9th class Physics Chapter 3 (English Medium)

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Matric Part 1/9th Class Physics Chapter 3 Short Question Test With Answer for Unit 3 Dynamics

9th Class English Medium Subjects

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Online Short Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

Physics (New Book) - 9th Class Physics English Medium Chapter 3 Preparation

What would happen if all friction suddenly disappears?

Why the spanner of washing machine is moved fastly

why do passengers fall outward of the bus when a bus takes a sharp turn

Why is it easy to roll a cylindrical eraser on a paper sheet than to slide it?

Action and reaction are always equal and opposite. Then how does a body moves?

What would happen if all friction disappears

Describe two situations in which force of friction is needed

State the principle of motion of Rocket

Why friction opposes motion

When a gun is fired, it recoils.

Prepare Complete Set Wise Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

9th Class Physics English Medium Chapter 3 Preparation - Set 1

What would happen if all friction suddenly disappears?

Why the spanner of washing machine is moved fastly

why do passengers fall outward of the bus when a bus takes a sharp turn

Why is it easy to roll a cylindrical eraser on a paper sheet than to slide it?

Action and reaction are always equal and opposite. Then how does a body moves?

What would happen if all friction disappears

Describe two situations in which force of friction is needed

State the principle of motion of Rocket

Why friction opposes motion

When a gun is fired, it recoils.

9th Class Physics English Medium Chapter 3 Preparation - Set 2

What is meant by dynamics?

Action and reaction are always equal and opposite. Then how does a body moves?

Difference between Mass and Weight?

What is isolated system.

Define centripetal force and give formula

What is the relation between force and momentum

What is meant by limiting friction

In which case it is easy for the tireto roll over? Rough ground

Define Tension in a string, Braking force Momentum?

What will be the tension in a rope pulled from its ends by two opposite force 100N each

9th Class Physics English Medium Chapter 3 Preparation - Set 3

Writer two disadvantages and two disadvantages of friction.

How can you relate a force with the change of momentum of a body

Action and reaction are always equal and opposite. Then how does a body moves?

Action and reaction are always equal and opposite

State Newton third law of Motion?

What is action in above example.

Find the acceleration produced by a force of 100N in a mass of 50kg

Define Tension in a string, Braking force Momentum?

Define Banking of roads.

Which shoes is better for jugging

9th Class Physics English Medium Chapter 3 Preparation - Set 4

What is the law of inertia?

Action and reaction are always equal and opposite

Writer two disadvantages and two disadvantages of friction.

Difference between Mass and Weight?

Define centripetal force and give formula

A force of 20N moves a body with an acceleration of 2ms-2What is tits mass?

What is meant by dynamics?

When a gun is fired, it recoils.

A horse pushes the cart It the action and reaction are equal and opposite then how does the cart move.

Define newton's second law of motion and give equation

9th Class Physics English Medium Chapter 3 Preparation - Set 5

Why spinner of washing machine is made to spin at very high speed

What is meant by limiting friction

A force of 20N moves a body with an acceleration of 2ms-²What is tits mass?