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Worksheet on Force and Laws of Motion class 9

Last updated on July 5th, 2023 at 02:07 pm

This post presents a Force & Laws of Motion class 9 Worksheet for high school students.

This worksheet with multiple choice questions is based on the chapters (a) Laws of Motion & (b) Force of different types. This is useful for Class 9,10, and 11 students of different boards like CBSE, ICSE, IGCSE, etc.

Force & Laws of Motion Class 9 Worksheet

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

a) constant
b) decreases
c) increases
d) equal to zero

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

a) is inversely proportional to the mass of the body
b) is proportional to the mass of the body
c) does not depend on the mass of the body
d) equal to zero

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

a) take more force to move
b) take less force to move
c) take more time to move
d) can not be moved to large distances

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

a) Determines magnitude
b) Determines direction
c) Determines distance
d) Determines velocity

5 ) Which of the following are examples of dynamics?

a) All of these answers
b) A pulley system demonstrating push and pull
c) Two magnets being attracted to one another
d) 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?

a) Newton’s Second law
b) Kinetic Energy
c) Momentum
d) Thermodynamics

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

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a) remain constant
b) decrease
c) increase
d) become zero

8 ) The First Law of Motion explains the relationship between

a) velocity and motion
b) force and motion
c) time and space
d) speed and acceleration

9) The Second Law of Motion explains the relationship between

a) force and motion
b) velocity and motion
c) time and space
d) speed and acceleration

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

a) derivative of its linear momentum
b) derivative of its speed
c) derivative of its mass
d) derivative of its internal energy

11 ) The third law of motion states that

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

a) 1 kg
b) 1 N
c) 10 kg
d) 10 N

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

a) The buoyancy affects the apparent weight underwater
b) The difference in gravity affects the apparent weight underwater
c) The difference in mass affects the apparent weight underwater
d) The apparent weight of the object is exactly the same both underwater and in the 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?

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a) 5 N
b) 20 N
c) 200 N
d) 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?

a) 500 N
b) 1000 N
c) 4000 N
d) 250 N

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