CURIOUSITY QUIZ: FORCE AND LAWS OF MOTION

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Test Your knowledge on 'Force and Laws of Motion' prepared exclusively according to the NCERT science curriculum for Class-9 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck!

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Inertia is the natural tendency of an object to resist a change in its state of :

1 point

Rest

Uniform Motion

Rest or Uniform motion

None of the Above

Clear selection

What is regarded as the quantitative measure of Inertia of a body?

1 point

Weight

Mass

Density

Volume

Clear selection

A fielder, in order to receive a catch from a hard hitting ball , generally retracts or draws back his hand. This is in order to :

1 point

Increase the time the Momentum of the ball is brought to zero and thereby decreasing the impact Force on his hand.

Decrease the time the Momentum of the ball is brought to zero and thereby decreasing the impact Force on his hand.

Increase the time the Momentum of the ball is brought to zero and thereby increasing the impact Force on his hand.

Decrease the time the Momentum of the ball is brought to zero and thereby increasing the impact Force on his hand.

Clear selection

The action -reaction pair of forces never cancel each other. This is because :

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Their directions are clearly different resulting in an unbalanced force.

Their magnitudes are different resulting in an unbalanced force.

Their directions and magnitudes are both different resulting in an unbalanced force.

They act on different bodies.

Clear selection

Even though the action and reaction forces are always equal in magnitude, these forces may not produce accelerations of equal magnitudes on the bodies they act. This is because :

1 point

These two forces are oppositely directed.

These two forces always occur in pairs.

These two forces never cancel each other.

Each of these forces acts on a different body that may have a different mass.

Clear selection

Which is NOT an example of Newton's third Law of motion in our daily life ?

1 point

A boat moves away in water as a sailor jumps off the boat to the shore.

A sand bed is provided for an athlete to fall after completing his high jump.

It is difficult for a fireman to hold a hose, which ejects large amounts of water at a high velocity.

Recoil of a gun as the bullet is fired.

Clear selection

Which is NOT an example of Newton's first Law of motion in our daily life?

1 point

A groove is provided in a saucer for placing the tea cup.

A passenger leans forward when a moving train suddenly stops.

Some of the leaves may get detached from a tree if we vigorously shake its branch..

A fielder, while receiving a hard hitting catch, generally lowers his hand.

Clear selection

What is NOT an example of Newton's second Law of motion in our daily life?

1 point

Pushing an empty shopping cart is easier than pushing a loaded shopping cart.

The racing cars are normally built light weight.

A boat moves away in water as a sailor jumps off the boat to the shore.

A karate player is able to break a slab of bricks with a blow by swiftly moving his knocking hand.

Clear selection

The principle of Conservation of Linear Momentum applies only for a/an :

1 point

Two body system

Multibody system

Isolated system

Non-isolated system

Clear selection

Who first, by observing the motion of marbles rolling down on an inclined plane, deduced that objects move with constant speed when no force acts on them?

1 point

Newton

Galileo

Aristotle

René Descartes

Clear selection

Which is NOT an illustration of the principle of Conservation of Linear Momentum?

1 point

Motion of jet planes in air

A Rocket launch

Collision of two bodies moving on a smooth frictionless floor

Dust particles from a door-mat can be removed with a sudden jerk.

Clear selection

In the absence of any resistive force like friction, an object given a slight push initially would:

1 point

Move with uniform acceleration.

Move with uniform velocity for some time before coming to rest.

Move with uniform velocity indefinitely.

Move with both uniform acceleration and uniform velocity..

Clear selection

Conservation of Linear momentum tells , in an isolated system, the total linear Momentum of a system of bodies remains constant. What is meant by an Isolated System?

1 point

A system far away from the gravitational forces of large bodies

A system free from the air resistance

A system where no external force acts

A system free from Earth's gravity

Clear selection

Suppose a body is moving with a velocity 'v'. When its Momentum is doubled , what will happen to the Kinetic Energy of the same body ?

1 point

A system far away from the gravitational forces of large bodies

A system free from the air resistance

Kinetic Energy increases 4 times

A system free from Earth's gravity

Clear selection

Newton's first Law of Motion is of Motion regarded as the law of :

1 point

Force

Conservation of Momentum

Inertia

Gravity

Clear selection

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