Last updated on December 5th, 2022 at 11:44 am
This post presents a Force & Laws of Motion worksheet for class 9 (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.
Force & Laws of Motion worksheet for class 9 – MCQ
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 the air?
| The buoyancy affects the apparent weight underwater |
| The difference in gravity affects the apparent weight underwater |
| The difference in mass affects the apparent weight underwater |
| 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?
| 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 |
