ICS Part 1 Physics English Medium Chapter 3 Online Short Questions Test with Answers

Question # 1

Derive its equation of motion ?

Ans 1:

Question # 2

What is isolated system ? State and explain the law conservation of linear momentum. with an example ?

Ans 1: Isolated System:A system which is not affected by external forces is known as an isolated system.
Law of conservation of linear Momentum:
Statement:This law states that, In the absence of external forces the total linear momentum of the system remains constant.
Example:Consider two bodies of masses 'm₁, and m₂which are moving in the same direction along the same line, as shown in the figure

Question # 3

Why Newton's first law of motion is known as law of inertia?

Ans 1: Newton's first law of motion is:
A body at rest will remain at rest and a body moving with uniform velocity will continue to do so unless acted upon by some unbalanced external force.
It is based on mass and inertia is the quantitative measure of an object's mass. So Newton's first law of motion is also Known as law of inertia.

Question # 4

What are the factors upon which force due to water depend?

Ans 1: Force due to water flow depends upon viscosity of the media and velocity of the fluid.

Question # 5

State Newton's third law of motion and give at least two examples.

Ans 1: It states that every action has a reaction which is equal in magnitude but opposite in direction.An ideal elastic collision and propulsion of a rocket are two good examples of third law of motion.

Question # 6

Define elastic and inelastic collisions.

Ans 1: Elastic collisions: A collision in which the K.E. Of the system is conserved is called elastic collision.
Inelastic collisions: A collision in which the K.E.of the system is not conserved is called inelastic collision.

Question # 7

Discuss the momentum changes produced by explosive forces ?

Ans 1: There are many cases where momentum changes are produced by explosive forces within an isolated system. It can be explain with the help of following Example:
When a sheel explodes in mind-air its fragment fly apart in different direction. the various forces which occur in the explosion have zero resultant, because they cancel the effect of each other. so the total moments of the fragments is equal to the initial momentum of the sheel.

Question # 8

Define linear momentum ? Express Newton,s 2nd Law in terms of momentum?

Ans 1:

Question # 9

Discuss the sign of acceleration due to gravity relative to velocity,while the object in in air?

Ans 1: When the object is thrown vertically upward, it will move against the direction of gravity. The sign of acceleration due to gravity relative to velocity will be taken as negative.When the object is falling downward , it will move along the direction of gravity .
The sign of acceleration due to gravity relative to velocity will be taken as positive.

Question # 10

What is the change in total energy during elastic or inelastic collisions?

Ans 1: The total energy of the system remains conserved during both type of collisions. But in an inelastic collision, some of the kinetic energy is lost .

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ICS Part 1 Physics English Medium Chapter 3 Online Short Questions Test with Answers

Online Short Questions For Chapter 3 "ICS Part 1 Physics Chapter 3 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 3 Short Questions Test

Derive its equation of motion ?

What is isolated system ? State and explain the law conservation of linear momentum. with an example ?

Why Newton's first law of motion is known as law of inertia?

What are the factors upon which force due to water depend?

State Newton's third law of motion and give at least two examples.

Define elastic and inelastic collisions.

Discuss the momentum changes produced by explosive forces ?

Define linear momentum ? Express Newton,s 2nd Law in terms of momentum?

Discuss the sign of acceleration due to gravity relative to velocity,while the object in in air?

What is the change in total energy during elastic or inelastic collisions?

Prepare Complete Set Wise Questions For Chapter 3 "ICS Part 1 Physics Chapter 3 Short Questions Test "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

ICS Part 1 Physics Chapter 3 Short Questions Test - Set 1

Derive its equation of motion ?

What is isolated system ? State and explain the law conservation of linear momentum. with an example ?

Why Newton's first law of motion is known as law of inertia?

What are the factors upon which force due to water depend?

State Newton's third law of motion and give at least two examples.

Define elastic and inelastic collisions.

Discuss the momentum changes produced by explosive forces ?

Define linear momentum ? Express Newton,s 2nd Law in terms of momentum?

Discuss the sign of acceleration due to gravity relative to velocity,while the object in in air?

What is the change in total energy during elastic or inelastic collisions?

ICS Part 1 Physics Chapter 3 Short Questions Test - Set 2

Derive the 3rd equation of motion?

Why a safety helmet of a motor cycle's is padded?

Under what conditions a body can move with uniform acceleration?

Write solid reasons for the loss of kinetic energy in an inelastic collision.

Derive the 2nd equation of motion ?

State law of inertia?

An object is thrown vertically upward.Discuss the sign of acceleration due to gravity, relative to velocity, while the object is in air.

Define inertial and non-inertial frame of references.

Name the quantities which can be calculated from velocity-time graph and these can be calculated ?

What is a Ballistic Flight?

ICS Part 1 Physics Chapter 3 Short Questions Test - Set 3

Discuss the displacement-time Graph?

Under what conditions a body can move with uniform acceleration?

What is meant by perfectly elastic head-on-collision ?discuss the elastic collision in one dimension and find the mathematical equation for calculating the final velocities of colliding objects in one dimension?

An object is thrown vertically upward.Discuss the sign of acceleration due to gravity, relative to velocity, while the object is in air.

What is the change in total energy during elastic or inelastic collisions?

Differentiate between distance and displacement.

What is isolated system ? State and explain the law conservation of linear momentum. with an example ?

Can the velocity of an object reverse the direction when acceleration is constant? If so, given an example.

Under what condition, the instantaneous and average velocities of a moving object become equal?

How is the distance calculated from velocity time graph?

ICS Part 1 Physics Chapter 3 Short Questions Test - Set 4

Derive its equation of motion ?

Define the following terms?AccelerationUniform AccelerationVariable AccelerationRadical AccelerationLinear AccelerationPositive AccelerationNegative AccelerationInstantaneous Acceleration

Name the quantities which can be calculated from velocity-time graph and these can be calculated ?

What is a Ballistic Flight?

At what point or points in its path does a projectile have its minimum speed,its maximum speed?

Define total of flight. Derive a mathematical expression for it ?

How is the distance calculated from velocity time graph?

What is isolated system ? State and explain the law conservation of linear momentum. with an example ?

Define ballistics flight and ballistic trajectory.

Discuss the momentum changes produced by explosive forces ?

ICS Part 1 Physics Chapter 3 Short Questions Test - Set 5

Discuss the momentum changes produced by explosive forces ?

Define Force? Define its SI unit ?

Motion with constant velocity is a special case of motion with constant acceleration.Is this statement true?

Define the following terms?Position,Uniformsspeed,variable speedaverage speed,Instantaneous speed,

Define elastic and inelastic collisions.

Define linear momentum ? Express Newton,s 2nd Law in terms of momentum?

Find on expression for horizontal rang of projectile?

Derive the 2nd equation of motion ?

Define the following terms?
Acceleration
Uniform Acceleration
Variable Acceleration
Radical Acceleration
Linear Acceleration
Positive Acceleration
Negative Acceleration
Instantaneous Acceleration

Define the following terms?
Position,
Uniforms
speed,
variable speed
average speed,
Instantaneous speed,

Define the following terms?
Position,
Uniforms
speed,
variable speed
average speed,
Instantaneous speed,