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
| 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?
| 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 |
