# Uniform Circular Motion Quiz

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## 12 Questions

### What is angular displacement?

The angle turned by a body moving on a circle from a reference line

Time period

### What is centripetal acceleration?

Acceleration acting on an object along the radius towards the center of the circular path

### What does relative velocity refer to?

The velocity of an object with respect to another object

### How is angular acceleration defined?

The time rate of change of angular velocity

### What is the name given to a body thrown with some initial velocity in two dimensions under the action of gravity alone?

Projectile motion

Trajectory

### In projectile motion, what is the principle that states horizontal and vertical motions are independent of each other?

Principle of physical independence of motions

Angular motion

### An object projected from a point with velocity u above the ground can have x0 = 0 and y0 = 0 at time t = 0. What type of projection is this?

Horizontal projection

### Which of the following examples best represents a scenario of projectile motion?

A stone thrown in any direction

## Study Notes

### Angular Motion

• Angular displacement is the angle through which an object rotates.

### Circular Motion

• The time taken by an object to complete one revolution on its circular path is called the period.
• Centripetal acceleration is the acceleration of an object moving in a circular path, directed towards the center of the circle.

### Relative Motion

• Relative velocity refers to the velocity of an object with respect to another object or a reference frame.

### Angular Acceleration

• Angular acceleration is the rate of change of angular velocity.

### Projectile Motion

• A body thrown with some initial velocity in two dimensions under the action of gravity alone is called a projectile.
• The path that an object follows when thrown at an angle with the horizontal direction is called a trajectory.
• The principle that states horizontal and vertical motions are independent of each other is the fundamental principle of projectile motion.
• The movement of an object along the circumference of a circle along a circular path is called circular motion.

### Projectile Motion Scenarios

• An object projected from a point with velocity u above the ground can have x0 = 0 and y0 = 0 at time t = 0, which is a scenario of vertical projection.
• Examples of projectile motion include throwing a ball, kicking a football, or launching a rocket.

Test your knowledge on uniform circular motion, which involves an object moving in a circle at a constant speed while constantly changing its direction. This quiz covers concepts such as angular displacement and examples of uniform circular motion.

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