# First Law of Motion MCQ Science

50 Questions 30 Mins

### About First Law of Motion

The first law of motion is one of the most fundamental principles in physics. This law is important to understand because it can help explain how objects move and interact with each other. In this blog post, we will discuss the first law of motion and its implications for physics and everyday life!

This law states that an object will continue moving in a straight line unless it is acted upon by an outside force. The first law of motion is a fundamental principle of physics and it helps to explain the motion of objects.

In everyday life, the first law of motion is often demonstrated by Newton's cradle. This is a device that consists of a series of balls suspended from a frame. When one ball is lifted and released, it swings into the other balls and sets them in motion. The first law of motion explains why the balls continue to swing back and forth even after the initial ball has stopped moving.

The first law of motion is also responsible for the motion of objects in space. For example, a satellite orbiting around Earth is acted upon by the force of gravity. However, the satellite continues to move in a straight line because it has inertia.

The first law of motion can be summarized as follows: An object will remain at rest or continue to move in a straight line unless acted upon by an unbalanced force.

Following are some of the multiple choice questions on the First Law of Motion with answers that will help the students in developing their knowledge.

## First Law of Motion MCQ

### 1. State first law of motion indicates?

• Contents
• Wisdom
• Knowledge
• None of the above

### 2. Which law of Motion gives the measure of Force?

• Newton’s first law of motion
• Newton’s second law of motion
• Newton’s third law of motion
• None of these

• First law
• Second Law
• Third Law
• Fourth Law

### 4. Which of the following does Newton’s first law of motion describe?

• Inertia
• Work
• Energy
• Moment of Inertia

### 5. Newton’s first law of motion is also called the law of

• mass.
• inertia.
• velocity.
• unbalanced forces.

### 6. Newton’s first law of motion states that an object’s motion will not change unless

• the net force acting on it is greater than zero.
• a force continues to be applied to the object.
• its inertia is stronger than the applied force.
• the object has no inertia.

### 7. Newtons first law of motion is sometime called the law of

• unbalanced forces
• statics
• inertia
• balanced forces

### 8. According to Newton’s first law of motion, an object at rest that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• remain at rest

### 9. Newton's First Law says that "Objects in motion stay in motion and objects at rest stay at rest unless..."

• acted on by an unbalanced force.
• gravity happens.
• nothing else happens.
• acted on by a balanced fore.

### 10. One object has twice as much mass as another object. The first object also has also twice as much...

• velocity
• gravitational acceleration
• inertia
• all of these

### 11. Name the scientist who proved for the first time that objects move with constant speed when no force acts on them –

• Galileo
• Newton
• Einstein
• None of these

• TRUE
• FALSE

### 13. ______________ implies that things cannot start, stop, or change direction all by themselves.

• first law of motion
• second law of motion
• third law of motion
• None of the above

### 14. The seat belts are provided in the cars so that if the car stops suddenly due to an emergency braking, the persons sitting on the front seats are not thrown forward violently and saved from getting injured. Can you guess the law due to which a person falls in the forward direction on the sudden stopping of the car?

• Newton’s first law of motion
• Newton’s second law of motion
• Newton’s third law of motion
• Newton’s third law of motion

### 15. Quantitative expression of force is given by:

• Newton’s second law of motion.
• Newton’s third law of motion.
• Newton’s first law of motion.
• Newton’s law of gravitation.

### 16. Motion rocket is space is the example of :

• First law of motion
• 2nd law of motion
• 3rd law of motion
• None of these

### 17. Newton's first law of motion is also known as

• Law of conservation of momentum
• Law of inertia
• Law of universal gravitation
• None of these

### 18. Newton's First law of motion is:

• Qualitative
• Quantitative
• Both qualitative and Quantitative
• Neither qualitative nor Quantitative

### 19. First law of motion defines:

• inertia
• Force
• both inertia and force
• Neither inertia nor force

• True
• False