04c - Angular Velocity and Acceleration

Front

What is tangential speed?

Back

The linear speed of an object directed along the tangent to the object’s circular path.

Front

Which of the following is NOT a unit of rotational speed?

Back

Meters per second.

Front

What is the direction of the velocity at point B if the ball is revolving clockwise?

Back

Down.

Front

Who has a greater linear velocity on a merry-go-round?

Back

The kid near the outside of the merry-go-round.

Front

How do you calculate angular velocity?

Back

Angular velocity (ω) = (Number of revolutions) / (Time taken).

Front

What is the unit of angular velocity?

Back

Radians per second (rad/s).

Front

Define angular acceleration.

Back

The rate of change of angular velocity over time.

Front

What is the relationship between linear speed and angular speed?

Back

Linear speed (v) = Radius (r) × Angular speed (ω).

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) = v² / r, where v is linear speed and r is radius.

Front

What is the difference between angular speed and angular velocity?

Back

Angular speed is a scalar quantity, while angular velocity is a vector quantity that includes direction.