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

Question # 1

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

Ans 1: A motor cycle's safety helmet is padded so as to extend the time of collision to prevent serious injury.

Question # 2

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

Ans 1: Yes, this statement is true. When a body moves with constant velocity in the straight line, its acceleration is zero.Hence,The acceleration of the body will always remain constant during such motion.As the zero is a constant quantity, therefore this is a special case of motion.

Question # 3

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 # 4

What is the effect on the speed of a fighter plane chasing another when it opens the fire? What happens to the speed of purdued plane when it returns the fire?

Ans 1: When the fighter plane opens fire, its momentum will be in back direction due to reaction force in backwards direction and therefore its speed will decrease.
When the pursued plane opens fire in the backward direction, the momentum will act on the plane in forward direction due to reaction and therefore its speed will increase.

Question # 5

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

Ans 1: Yes, the velocity of a body can reverse its direction with constant acceleration For example, when a body is thrown vertically upward under the action of gravity, the velocity of the object will go on decreasing because force of gravity is acting downward.
When the object reaches the maximum height , its velocity becomes zero, and then the object reverses its direction of motion and start moving vertically downward.During the whole process, the magnitude of the acceleration due to gravity remains constant.

Question # 6

Define Impulse ? Show that impulse is equal to change in momentum show that J= P

Ans 1: Impulse: The product of forces and duration of time in which the force acts is known as impulse.

Question # 7

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 # 8

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

Ans 1:

Question # 9

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 # 10

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

Ans 1:

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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

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

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

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 the effect on the speed of a fighter plane chasing another when it opens the fire? What happens to the speed of purdued plane when it returns the fire?

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

Define Impulse ? Show that impulse is equal to change in momentum show that J= P

Behaviour of bouncing ball?

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

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

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

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

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

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

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 the effect on the speed of a fighter plane chasing another when it opens the fire? What happens to the speed of purdued plane when it returns the fire?

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

Define Impulse ? Show that impulse is equal to change in momentum show that J= P

Behaviour of bouncing ball?

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

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

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

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

State law of inertia?

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

Distinguish between elastic and inelastic collision.

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

Discuss the displacement-time Graph?

State and explain Newton's second law of motion.

Write two object?

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

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

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

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

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

What is the effect on the speed of a fighter plane chasing another when it opens the fire? What happens to the speed of purdued plane when it returns the fire?

Define Force? Define its SI unit ?

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

Behaviour of bouncing ball?

Write two object?

Define ballistics flight and ballistic trajectory.

Under what conditions a body can move with uniform acceleration?

Differentiate between distance and displacement.

What is a Ballistic Flight?

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

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

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

Write two object?

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

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

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

Define elastic and inelastic collisions.

What is the difference between uniform and variable velocity?

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

Define inertial and non-inertial frame of references.

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

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?

Show that for the same initial speed and some range of projectile there are two mutually complementary angles of projection ?

Define inertial and non-inertial frame of references.

Differentiate between distance and displacement.

Write any two properties of inertial frame of reference.

Derive the 3rd equation of motion?

Behaviour of bouncing ball?

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

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,