Physics 9th Class Chapter 2 (Kinematics) English Medium Short Questions

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Online Short Questions For Chapter 2 "9th Class Physics English Medium Chapter 2 Preparation "

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Physics (New Book) - 9th Class Physics English Medium Chapter 2 Preparation

Question # 1

Define Dynamics.

Ans 1: Dynamics deals with forces and their effects on the motion of objects.

Question # 2

What does the length of the line respresent in a graphical representation of a vector.

Ans 1: The length of the line represents the magnitude of the vector accfording to a suitaabel scale.

Question # 3

Define Uniform velocity with example

Ans 1: Uniform Velocity: The velocityis said to be uniform the speed and direction of a moving body does not change.
Example: A body moving wiht unfiform velocity is the downward motionof a paratrooper.

Question # 4

The car while moving on a circular road may have constatn speed, bu tits velocity is chaning at every instant Why?

Ans 1: The velocity is vector quantity so as the direction of motion changes, velocity also changes.

Question # 5

Can displacement be greater than distance.

Ans 1: No, becasue the displacement of an object can be either equal to or less than the distance travel by the object.

Question # 6

Define Mechanics. Write the names of its branches.

Ans 1: Mechanics:
Mechanics is the branch of physics that deals with the motion of objects ad teh forces taht change it.
i. Kinematics ii. Dynamics

Question # 7

Define Mechanics

Ans 1: Mechanics is the branch of physics that deals with the motion of objects and the forces that change it.

Question # 8

Define Positive a acceleration.

Ans 1: The acceleratio is positive if the velocity is increasing.

Question # 9

What is meant by random motion.

Ans 1: If the body moves along an irregular path, the motion is called random motion.

Question # 10

Define instantaneous speed.

Ans 1: The speed of a vehicle that is shown by its speedometer at any instant is called instanceous speed.

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Prepare Complete Set Wise Questions For Chapter 2 "9th Class Physics English Medium Chapter 2 Preparation "

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9th Class Physics English Medium Chapter 2 Preparation - Set 1

Question # 1

Define Dynamics.

Ans 1: Dynamics deals with forces and their effects on the motion of objects.

Question # 2

What does the length of the line respresent in a graphical representation of a vector.

Ans 1: The length of the line represents the magnitude of the vector accfording to a suitaabel scale.

Question # 3

Define Uniform velocity with example

Ans 1: Uniform Velocity: The velocityis said to be uniform the speed and direction of a moving body does not change.
Example: A body moving wiht unfiform velocity is the downward motionof a paratrooper.

Question # 4

The car while moving on a circular road may have constatn speed, bu tits velocity is chaning at every instant Why?

Ans 1: The velocity is vector quantity so as the direction of motion changes, velocity also changes.

Question # 5

Can displacement be greater than distance.

Ans 1: No, becasue the displacement of an object can be either equal to or less than the distance travel by the object.

Question # 6

Define Mechanics. Write the names of its branches.

Ans 1: Mechanics:
Mechanics is the branch of physics that deals with the motion of objects ad teh forces taht change it.
i. Kinematics ii. Dynamics

Question # 7

Define Mechanics

Ans 1: Mechanics is the branch of physics that deals with the motion of objects and the forces that change it.

Question # 8

Define Positive a acceleration.

Ans 1: The acceleratio is positive if the velocity is increasing.

Question # 9

What is meant by random motion.

Ans 1: If the body moves along an irregular path, the motion is called random motion.

Question # 10

Define instantaneous speed.

Ans 1: The speed of a vehicle that is shown by its speedometer at any instant is called instanceous speed.

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

Question # 1

Define Dynamics

Ans 1: Dynanics deals with forces and their effect on the motion of objects

Question # 2

Defien Gradient. What do gradients of distance time graph represent.

Ans 1: Gradiaent: The gradient is the measure of slope of a line.
Gradient of the distence graph: Gradient of the distance graph represnents the averagee speed of the body

Question # 3

Defien velocity Write its formula and unit.

Ans 1: Velocity: The net displacement of a bodyin unit time is called velocity
Formula: Velociyt= Displacement/ Time
Nature of quanityt: Velocity is a vector quantity
Direction: The direction of velocity v is the same as that of displacemenbt d.
SI Unit: The SI unit of velocity is ms-1 or kmh-1

Question # 4

State head to tail rule for addition of vectors.

Ans 1: To add a anumber of vectors, radraw their representative lines such that the head of ne line coincides with the tail of the other. The resultant vector is given by a single vector whcih is directed from the tail of the first vector to to head of the last vector.

Question # 5

If graph line of speed time graph is horizontal to time. x axis. What does its mean.

Ans 1: If graph line is horizontal i.e. parallel to tome x axis. It shows that speed does not change with change in time. This is motion with constnat speed.

Question # 6

Define Uniform velocity with example

Ans 1: Uniform Velocity: The velocityis said to be uniform the speed and direction of a moving body does not change.
Example: A body moving wiht unfiform velocity is the downward motionof a paratrooper.

Question # 7

Difference between Scalar and Vector

Ans 1: scalar:
A scalar is that physicla quantity which cna be described completely by its magntitude only
Sclars are defined by magnitude includes a number and an appropriate unit
Example: Disatance, length, time speed, energy and temperature.
Ans 2: Vector:
A vector is taht physical quantity which needs magnitude as well as direction to describe it completely
A vector quantity is completely describeed with its mangnitude and direction.
Example: Displacment, velocity, acceleration, weight and force.

Question # 8

Define Mechanics

Ans 1: Mechanics is the branch of physics that deals with the motion of objects and the forces that change it.

Question # 9

Write direction and values of graivtational acceleration.

Ans 1: Directio of gravitational acceleration: The direction of gravitational acceleratio is always downwards.

Question # 10

Can displacement be greater than distance.

Ans 1: No, becasue the displacement of an object can be either equal to or less than the distance travel by the object.

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

Question # 1

Can vectors be added like scalars.

Ans 1: No, it is not possible and vectors cannot be added like scalars. they are added using head to tail rule. In this method. their direction also take into consideration.

Question # 2

What is meant by average speed.

Ans 1: The ratio between total distance covered to total time taken is called average speed it is calculated as.
Average speed = Total distance covered / total time taken.

Question # 3

What is meant by random motion.

Ans 1: If the body moves along an irregular path, the motion is called random motion.

Question # 4

Difference between Scalar and Vector

Ans 1: scalar:
A scalar is that physicla quantity which cna be described completely by its magntitude only
Sclars are defined by magnitude includes a number and an appropriate unit
Example: Disatance, length, time speed, energy and temperature.
Ans 2: Vector:
A vector is taht physical quantity which needs magnitude as well as direction to describe it completely
A vector quantity is completely describeed with its mangnitude and direction.
Example: Displacment, velocity, acceleration, weight and force.

Question # 5

What is vector quantity.

Ans 1: A vector is a physical quantity that requires both magnitude and direction for its complete description.
Example: Velocity, acceleration, displacement, force etc.

Question # 6

Define resultant vector

Ans 1: A single vector having same effect as all other original vector taken together is resultant vector

Question # 7

Write the name of fastest land mammal and fish.

Ans 1: Fastest land mammal is Cheetah and fastest fish is sail fish. Both have the same highest recorded speed of 110 kmh-1

Question # 8

Differentiate between Distance and Displacement

Ans 1: Distance:
The length of path traveled between two position s is called distance
Distance is usually denoted by Delta x , Delta r, Delta s
Distance is a scalar quantity . Its SI unit is.metre
Ans 2: Displacement:
The shoriest distance from initital position to final is called displacement
Displacement is denoted by 'd"
Displacement is a vector quantity . Its SI unit is metre

Question # 9

Define Uniform velocity with example

Ans 1: Uniform Velocity: The velocityis said to be uniform the speed and direction of a moving body does not change.
Example: A body moving wiht unfiform velocity is the downward motionof a paratrooper.

Question # 10

State head to tail rule for addition of vectors.

Ans 1: To add a anumber of vectors, radraw their representative lines such that the head of ne line coincides with the tail of the other. The resultant vector is given by a single vector whcih is directed from the tail of the first vector to to head of the last vector.

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9th class Physics Chapter 2 (English Medium)

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Matric Part 1/9th Class Physics Chapter 2 Short Question Test With Answer for Unit 2 Kinematics

9th Class English Medium Subjects

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Online Short Questions For Chapter 2 "9th Class Physics English Medium Chapter 2 Preparation "

Physics (New Book) - 9th Class Physics English Medium Chapter 2 Preparation

Define Dynamics.

What does the length of the line respresent in a graphical representation of a vector.

Define Uniform velocity with example

The car while moving on a circular road may have constatn speed, bu tits velocity is chaning at every instant Why?

Can displacement be greater than distance.

Define Mechanics. Write the names of its branches.

Define Mechanics

Define Positive a acceleration.

What is meant by random motion.

Define instantaneous speed.

Prepare Complete Set Wise Questions For Chapter 2 "9th Class Physics English Medium Chapter 2 Preparation "

Set 1

Set 2

Set 3

9th Class Physics English Medium Chapter 2 Preparation - Set 1

Define Dynamics.

What does the length of the line respresent in a graphical representation of a vector.

Define Uniform velocity with example

The car while moving on a circular road may have constatn speed, bu tits velocity is chaning at every instant Why?

Can displacement be greater than distance.

Define Mechanics. Write the names of its branches.

Define Mechanics

Define Positive a acceleration.

What is meant by random motion.

Define instantaneous speed.

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

Define Dynamics

Defien Gradient. What do gradients of distance time graph represent.

Defien velocity Write its formula and unit.

State head to tail rule for addition of vectors.

If graph line of speed time graph is horizontal to time. x axis. What does its mean.

Define Uniform velocity with example

Difference between Scalar and Vector

Define Mechanics

Write direction and values of graivtational acceleration.

Can displacement be greater than distance.

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

Can vectors be added like scalars.

What is meant by average speed.

What is meant by random motion.

Difference between Scalar and Vector

What is vector quantity.

Define resultant vector

Write the name of fastest land mammal and fish.

Differentiate between Distance and Displacement

Define Uniform velocity with example

State head to tail rule for addition of vectors.

9th class Physics Chapter 2 (English Medium)