Understanding Circular Motion

What is the direction of the force in uniform circular motion relative to the velocity?

• Parallel to the velocity

• Perpendicular to the velocity

• Opposite to the velocity

• At an angle of 45 degrees to the velocity

In non-uniform circular motion, what happens if the tangential force is in the opposite direction of the velocity?

• The speed decreases

• The object stops moving

• The speed increases

• The speed remains constant

How is angular displacement measured?

• In degrees

• In seconds

• In meters

• In radians

What rule is used to determine the direction of the angular displacement vector?

• Right-hand thumb rule

• Left-hand rule

• Newton's rule

• Coulomb's rule

What is the relationship between arc length, radius, and angular displacement?

• Arc length = radius + angular displacement

• Arc length = radius * angular displacement

• Arc length = radius / angular displacement

• Arc length = radius - angular displacement

In the example given, what is the linear displacement vector when the angular displacement vector is 0.5 in the K direction and the position vector is 2 in the I direction?

• 2 meters in the J direction

• 1 meter in the I direction

• 1 meter in the J direction

• 1 meter in the K direction

What is the formula for linear velocity in terms of angular velocity and radius?

• V = R / omega

• V = omega / R

• V = omega - R

• V = R * omega

How is angular velocity measured?

• In meters per second

• In radians per second

• In degrees per second

• In seconds

What happens to angular acceleration if the rotation is slowing down?

• It points in the same direction as angular velocity

• It points in the opposite direction of angular velocity

• It doubles

• It becomes zero

In the example, what is the centripetal acceleration when the angular speed is 3 radians/second and the radius is 2 units?

• 18 in the K direction

• 0 in the I direction

• 18 in the J direction

• 18 in the I direction