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Chapter 3: Dynamics – I

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1

Mass of a body is defined as:

2

The SI unit of mass is:

3

Mass of a body remains:

4

Inertia is the property of a body due to which it:

5

Greater mass means:

6

Which object has greater inertia?

7

Weight of a body is the force due to:

8

SI unit of weight is:

9

Weight of a body depends upon:

10

Weight of a body on the Moon is:

11

Gravitational field strength is defined as:

12

Symbol used for gravitational field strength is:

13

Value of gravitational field strength on Earth is approximately:

14

Which instrument is used to measure mass?

15

Which instrument is used to measure weight?

16

Spring balance measures:

17

Force that acts only when bodies are in contact is called:

18

Which of the following is a contact force?

19

Force that acts without physical contact is called:

20

Which is a non-contact force?

21

How many fundamental forces are there in nature?

22

Which is NOT a fundamental force?

23

Free body diagram represents:

24

In free body diagram, forces are shown by:

25

Newton’s First Law of Motion is also called:

26

According to Newton’s First Law, a body remains at rest if:

27

Newton’s First Law applies to bodies in:

28

Net force zero means body has:

29

Effect of force on velocity can be:

30

A force can change the direction of velocity as in:

31

When brakes are applied, passengers move forward due to:

32

Seat belts are used in cars to overcome effects of:

33

If net force on a body is not zero, body will:

34

Unit of gravitational field strength N/kg is equivalent to:

35

Mass measured by electronic balance depends on:

36

Which force is responsible for weight?

37

Inertia depends upon:

38

Which has more inertia?

39

Force is a vector quantity because it has:

40

Which force keeps planets in their orbits?

41

The tendency of a body to oppose change in motion is called:

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