Angular and Linear Velocity Quiz

What is the definition of angular velocity?

• The rate at which an object rotates or revolves around a fixed axis, measured in radians per second.

• The distance traveled by an object in a given time period

• The force exerted on an object due to gravity

• The speed at which an object moves in a straight line

How do you calculate angular velocity?

• Change in angle divided by change in time

• Change in angle plus change in time

• Change in angle multiplied by change in time

• Change in time divided by change in angle

In rotational motion, what is the role of angular velocity?

• Angular velocity determines the linear velocity of an object.

• Angular velocity determines the size of an object.

• Angular velocity determines the rate of rotation of an object.

• Angular velocity determines the color of an object.

What is arc length?

• The length of the radius of a circle.

• The distance between two points on a straight line.

• The area enclosed by a circle or any curved line segment.

• Distance along the circumference of a circle

What are the units of angular velocity?

• radians per second (rad/s)

• seconds per meter (s/m)

• kilograms per second (kg/s)

• meters per second (m/s)

What is the formula to calculate arc length?

• s = r^2

• s = rθ

• s = r/θ

• s = 2πr

A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?

• 6.67 rad/s

• 2500 rad/s

• 41.9 rad/s

• 20.9 rad/s

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

• Meters per second

• Revolutions per minute

• Revolutions per second

• Rotations per second

A bug on a turning phonograph record will make more turns per minute if it is located toward the center of the record.

• True
• False

The rotational equivalent to x (displacement) and v (velocity) are?

• m, m/s

• θ, ω

• x, x/t

• μ, Σ