MCQ worksheet on Laws of Motion & different types of force (for grade 9 or class 9)

This post presents an MCQ worksheet with multiple choice questions taken from the chapters (a) Laws of motion & (b) Force of different types. This is useful for Class (grade) 9 and 10 students of different boards like CBSE, ICSE, IGCSE, etc.

Laws of Motion & force – MCQ worksheet (physics)

1 ) First law of motion states that if an object experiences no net force, then its velocity is

constant
decreases
increases
equal to zero

2 ) According to the second law of motion, the acceleration of a body

is inversely proportional to the mass of the body
is proportional to the mass of the body
does not depend on the mass of the body
equal to zero

3 ) According to three Newton’s laws of motion, massive objects

take more force to move
take less force to move
take more time to move
can not be moved to large distances

4 ) What is the significance of mass in determining force?

Determines magnitude
Determines direction
Determines distance
Determines velocity

5 ) Which of the following are examples of dynamics?

All of these answers
A pulley system demonstrating push and pull
Two magnets being attracted to one another
An object resting on a surface

6 ) What major topic in physics does mass play a central role in determining the behavior of bodies, such as force?

Newton’s Second law
Kinetic Energy
Momentum
Thermodynamics

7 ) If an object experiences no net force, its velocity will

remain constant
decrease
increase
become zero

8 ) The First Law of Motion explains the relationship between

velocity and motion
force and motion
time and space
speed and acceleration

9) The Second Law of Motion explains the relationship between

force and motion
velocity and motion
time and space
speed and acceleration

10 ) The net force on an object is equal to the

derivative of its linear momentum
derivative of its speed
derivative of its mass
derivative of its internal energy

11 ) The third law of motion states that

for every action, there is an equal and opposite reaction
the net force on an object is equal to the rate of change, or derivative, of its linear momentum
a body at rest stays at rest unless acted on by an external force
a body in motion stays in motion unless acted on by an external force

12 ) If something weighs 10N on Earth, what is the mass of the object?

1 kg
1 N
10 kg
10 N

13) How does the apparent weight of an object underwater differ from the same exact object in air?

The buoyancy affects the apparent weight underwater
The difference in gravity affects the apparent weight underwater
The difference mass affects the apparent weight underwater
The apparent weight for the object is exactly the same both underwater and in air

14) What is the normal force of an object on Earth with a mass of 1 kg and on an incline of 60 degrees?

5 N
20 N
200 N
None of these

15) If a person has a weight of 500 N, what is the normal force on that person riding an elevator moving up at a constant speed of 2 m/s?

500 N
1000 N
4000 N
250 N
MCQ worksheet on Laws of Motion & different types of force (for grade 9 or class 9)
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