PQ 12.5 Angular Motion (Principles 6 and 7)

What is the turning effect referred to as when an eccentric force is applied to a body?

• Friction

• Acceleration

• Velocity

• Torque

In which sports is the ability to impart spin on a projectile a key component of strategy?

• Swimming and Track

• Soccer and Golf

• Baseball and Tennis

• Basketball and Football

What happens if a force is applied through the axis of rotation?

• The body will accelerate

• No turning effect or torque will result

• The body will rotate

• The body will move in a straight line

What are the three factors that the magnitude of torque depends on?

• Force, speed, and time

• Mass, distance, and time

• Force, lever arm length, and angle of force application

• Velocity, acceleration, and displacement

What injury can result from the high torque-generating forces when swinging a tennis racquet or a golf club?

• Knee injury

• Hamstring strain

• Ankle sprain

• Rotator cuff tears

What is the product of the rate at which a rotating body is rotating and the extent to which the body resists angular motion?

• Angular velocity

• Centripetal acceleration

• Linear momentum

• Frictional force

Why do short and small athletes tend to enjoy success in sports such as trampoline, gymnastics, and diving?

• Their resistance to angular motion is less

• They have less experience

• They have better technique

• They have more strength

What happens to the moment of inertia when a trampolinist brings her arms and legs close to her body?

• It remains constant

• It increases

• It decreases

• It becomes zero

What law states that the total angular momentum of a rotating body remains constant if the net torque acting on it is zero?

• Archimedes' Principle

• Law of Conservation of Energy

• Newton's First Law

• Law of Conservation of Angular Momentum

What happens to the skater's rate of rotation when she brings her arms in close to her body during a spin?

• It becomes zero

• It remains constant

• It decreases

• It increases