## 12 Questions

What is angular displacement?

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

What is the unit for angular velocity?

Radian or Degree

Which term describes the time taken by an object to complete one revolution on its circular path?

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

Which term refers to the path that an object follows when thrown at an angle with the horizontal direction?

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

What type of motion is the movement of an object along the circumference of a circle along a circular path?

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.
- The unit for angular velocity is radians per second (rad/s).

### 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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