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

Question # 1

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?

Ans 1: Perfectly elastic head-on-collision:The collision in which the motion of the objects occurs along a straight line is known as perfect elastic head-on-collision.Determination of mathematical equations for calculating the final velocities of colliding objects in one dimension:

Question # 2

What is principle of rocket propulsion speed?

Ans 1: Hot gases are expelled with extremely high velocity from the rocket engines.The gain in momentum of the gases equals the gain in momentum of the rocket.The gases and rocket move in opposite directions. This, the principle of rocket propulsion speed is law of conservation of momentum and Newton's 3rd law of motion.

Question # 3

Behaviour of bouncing ball?

Ans 1: When a hard ball is dropped onto a marble floor, it rebounds to very nearly the initial height. It loses negligible amount of energy in the collision with the floor.Then such collision is approximately an elastic collision. But if the ball is not able to reach the initial height such as collision with the sand then there is a loss of kinetic energy and such collision is called inelastic collision.

Question # 4

Define Collision ? Discuss the type of collision?Give example in each case?

Ans 1: Collision:When two or more than two bodies come so closer to each other that there exists some type of interaction between them in the presence or absence of external forces then such type of interaction is known as collision.
Type of Collision:There are two type of collision, which are given below.
Elastic Collision:The Collision in which the momentum and kinetic energy both are conserved is known as elastic collision.
Examples:
1. collision of steel balls,
2. Collision of atoms,
3. Collision of molecules.
Inelastic Collision:The Collision in which the momentum is conserved but K.E is not conserved, is known as Inelastic collision. "
In such type of collision, same type of the K.E is converted into internal energy, sound energy and the work needed to permanently deform the object involed, such as cars ina car crash.
Example:
1. Collision between two vehicles
2. Collision between two mud balls

Question # 5

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 # 6

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

Ans 1: In case of inelastic collision, the loss of kinetic energy is due to
1. Friction of ball with floor
2. Friction of ball with air
3. sound

Question # 7

Differentiate between distance and displacement.

Ans 1:

Question # 8

Define Force? Define its SI unit ?

Ans 1: A Force is an agent which stops a moving body try to stop a moving body (or) which moves a stationary body (or) try to move stationary The Product of mass and accelerations known as force
F = ma
Unit of force:
F= ma = kg m/sec²So the unit of force is Newton, Which is define as,
Force is said to be 1 newton ,if it moves a body of mass 1 kg with acceleration of 1m/sec²,

Question # 9

Define the following terms?
Velocity,
Uniform Velocity,
Variable Velocity,
Average Velocity.
Instantaneous Velocity.

Ans 1: Velocity:The distance between covered by a body in one second along a particular direction is known as velocity.
V = S/t velocity is a vector quantity. its standard unit is "m/sec
Uniform Velocity:A body is said to be moving with uniform velocity, if it covers equal displacement in equal intervals of time .
Variable Velocity:A body is said to be moving with variable velocity, if it covers unequal displacement in equal intervals of time.
Average Velocity:The average velocity can be obtained by dividing total displacement by total time taken.
Average velocity = Total Displacement /Total time taken
V = S/T
Instantaneous Velocity:The velocity of a body at any particular instant of time is known as instantaneous velocity.

Question # 10

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

Ans 1: Distance moved by the body and its acceleration can be calculated by the velocity-time graph.
Area under the velocity time graph line is equal to the distance covered by the body. Slope of the tangent at any point gives the instantaneous acceleration at that point.

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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

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?

What is principle of rocket propulsion speed?

Behaviour of bouncing ball?

Define Collision ? Discuss the type of collision?Give example in each case?

Discuss the momentum changes produced by explosive forces ?

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

Differentiate between distance and displacement.

Define Force? Define its SI unit ?

Define the following terms?Velocity,Uniform Velocity,Variable Velocity,Average Velocity.Instantaneous Velocity.

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

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

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?

What is principle of rocket propulsion speed?

Behaviour of bouncing ball?

Define Collision ? Discuss the type of collision?Give example in each case?

Discuss the momentum changes produced by explosive forces ?

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

Differentiate between distance and displacement.

Define Force? Define its SI unit ?

Define the following terms?Velocity,Uniform Velocity,Variable Velocity,Average Velocity.Instantaneous Velocity.

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

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

What is the difference between uniform and variable velocity?

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

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

State law of inertia?

Find a relation for magnitude of velocity of projectile and direction of projectile?

What is ballistic missile? Define ballistic trajectory.

Under what conditions a body can move with uniform acceleration?

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

Define free fall motion? Also define the acceleration due to gravity ?

Define momentum and write down its unit.

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

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

Define maximum height of projectile? Derive a mathematical expression for maximum height of projectile ?

State and explain Newton's second law of motion.

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

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

Define Distance and displacement ?

What is Ballistic Flight and Ballistic Missile?

Define inertial and non-inertial frame of references.

What is a Ballistic Flight?

Why ballistic missiles are not useful for long ranges?

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

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

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

What is a Ballistic Flight?

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

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

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

State law of inertia?

Derive an equation for the position vector of projectile?

Derive the 3rd equation of motion?

Define Force? Define its SI unit ?

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

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

Differentiate between distance and displacement.

Define momentum and write down its unit.

Define the following terms?Velocity,Uniform Velocity,Variable Velocity,Average Velocity.Instantaneous Velocity.

Derive an equation for the position vector of projectile?

Define free fall motion? Also define the acceleration due to gravity ?

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

Behaviour of bouncing ball?

Define the following terms?
Velocity,
Uniform Velocity,
Variable Velocity,
Average Velocity.
Instantaneous Velocity.

Define the following terms?
Velocity,
Uniform Velocity,
Variable Velocity,
Average Velocity.
Instantaneous Velocity.

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

Define the following terms?
Velocity,
Uniform Velocity,
Variable Velocity,
Average Velocity.
Instantaneous Velocity.