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Questions and Answers
What is angular displacement?
What is angular displacement?
- The angle turned by a body moving on a circle from a reference line (correct)
- The acceleration acting on an object in circular motion
- The time rate of change of angular velocity
- The speed of an object in circular motion
What is the unit for angular velocity?
What is the unit for angular velocity?
- Newton
- Kilograms
- Radian or Degree (correct)
- Meters per second
Which term describes the time taken by an object to complete one revolution on its circular path?
Which term describes the time taken by an object to complete one revolution on its circular path?
- Angular acceleration
- Time period (correct)
- Frequency
- Angular velocity
What is centripetal acceleration?
What is centripetal acceleration?
What does relative velocity refer to?
What does relative velocity refer to?
How is angular acceleration defined?
How is angular acceleration defined?
What is the name given to a body thrown with some initial velocity in two dimensions under the action of gravity alone?
What is the name given to a body thrown with some initial velocity in two dimensions under the action of gravity alone?
Which term refers to the path that an object follows when thrown at an angle with the horizontal direction?
Which term refers to the path that an object follows when thrown at an angle with the horizontal direction?
In projectile motion, what is the principle that states horizontal and vertical motions are independent of each other?
In projectile motion, what is the principle that states horizontal and vertical motions are independent of each other?
What type of motion is the movement of an object along the circumference of a circle along a circular path?
What type of motion is the movement of an object along the circumference of a circle along a circular path?
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?
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?
Which of the following examples best represents a scenario of projectile motion?
Which of the following examples best represents a scenario of projectile motion?
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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.
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