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 |