Class 9 | Laws Of Motion

Flash Card

Father has mass 60 kg and the mass of his son is 30 kg. The ratio of the inertia of the father to his child is

1/30

The inertia of a moving object depends on

2/30

If a car is traveling at a constant speed around a curve, what is responsible for changing its direction?

3/30

The displacement that occurs in unit time is called ................... .

4/30

What is acceleration?

5/30

What is the SI unit of momentum?

6/30

An object continues to remain at rest or in a state of uniform motion along a straight line unless an .............. acts on it.

7/30

The tendency of a body to resist .................. acceleration is called .

8/30

What is the numerical formula for force?

9/30

One Newton is defined as the force which gives a mass of 1 kg and acceleration of............ .

10/30

Which of the following does not belong with the others?

11/30

According to Newton's first law of motion, an object will remain at rest or in uniform motion unless acted upon by:

12/30

The unit of velocity in the SI system is .................... .

13/30

When body is performing uniform circular motion, its ................... changes at every point.

14/30

............... is an example of positive acceleration.

15/30

When a moving body comes to rest, then its initial velocity is taken as zero.

16/30

................... is the relation between displacement and time.

17/30

If an object is moving with a uniform velocity ........................ .

18/30

The linear momentum of a system remains constant if no ............ force acts on it.

19/30

Rocket works on the principle of conservation of

20/30

A student is able to move a block of mass 2 kg with minimum force of 1N. The force of friction between the object and the surface will be

21/30

If the velocity changes by equal amounts in equal time intervals, the object is said to be in ................. .

22/30

Which of the following is an example of accelerated motion?

23/30

The ............... is proportional to the applied force and it occurs in the direction of the force.

24/30

A body at rest explodes into two equal parts. Then, they move with

25/30

v2 = u2 + 2as is the relation between ............... and ............. .

26/30

Retardation means .............. acceleration.

27/30

The force necessary to cause an acceleration of 1 m/s2 in an object of mass 1 kg is called .................. .

28/30

In a collision ................. is always conserved.

29/30

Even if the displacement of an object is zero, the actual distance traversed by it...................

30/30

Class 9 | Laws Of Motion

1 / 30

One Newton is defined as the force which gives a mass of 1 kg and acceleration of………… .

2 / 30

Even if the displacement of an object is zero, the actual distance traversed by it……………….

3 / 30

Which of the following is an example of accelerated motion?

4 / 30

If a car is traveling at a constant speed around a curve, what is responsible for changing its direction?

5 / 30

Retardation means ………….. acceleration.

6 / 30

What is the SI unit of momentum?

7 / 30

An object continues to remain at rest or in a state of uniform motion along a straight line unless an ………….. acts on it.

8 / 30

The …………… is proportional to the applied force and it occurs in the direction of the force.

9 / 30

What is acceleration?

10 / 30

If the velocity changes by equal amounts in equal time intervals, the object is said to be in …………….. .

11 / 30

When a moving body comes to rest, then its initial velocity is taken as zero.

12 / 30

v2 = u2 + 2as is the relation between …………… and …………. .

13 / 30

In a collision …………….. is always conserved.

14 / 30

The inertia of a moving object depends on

15 / 30

…………… is an example of positive acceleration.

16 / 30

A body at rest explodes into two equal parts. Then, they move with

17 / 30

Rocket works on the principle of conservation of

18 / 30

The linear momentum of a system remains constant if no ………… force acts on it.

19 / 30

………………. is the relation between displacement and time.

20 / 30

When body is performing uniform circular motion, its ………………. changes at every point.

21 / 30

The unit of velocity in the SI system is ……………….. .

22 / 30

Which of the following does not belong with the others?

23 / 30

A student is able to move a block of mass 2 kg with minimum force of 1N. The force of friction between the object and the surface will be

24 / 30

If an object is moving with a uniform velocity …………………… .

25 / 30

The tendency of a body to resist ……………… acceleration is called .

26 / 30

Father has mass 60 kg and the mass of his son is 30 kg. The ratio of the inertia of the father to his child is

27 / 30

What is the numerical formula for force?

28 / 30

According to Newton’s first law of motion, an object will remain at rest or in uniform motion unless acted upon by:

29 / 30

The displacement that occurs in unit time is called ………………. .

30 / 30

The force necessary to cause an acceleration of 1 m/s2 in an object of mass 1 kg is called ……………… .

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