PE Equilibrium Quiz

What does equilibrium mean in physics?

• When an object is accelerating

• When an object has no unbalanced forces or torques acting on it

• When an object is only affected by gravity

• When an object is at a high velocity

Which of the following best describes static equilibrium?

• An object moving with changing velocity

• An object that is motionless

• An object that is accelerating

• An object that is decelerating

What is dynamic equilibrium?

• An object moving with changing speed

• An object moving with changing direction

• An object moving with constant velocity (no change in speed or direction)

• An object that is stationary

What is stability?

• The ability to control equilibrium

• The resistance to the disruption of equilibrium

• A subconscious response to losing balance

• The ability to unbalance an object

What happens when stability is increased?

• It becomes easier to unbalance an object

• It becomes more difficult to control equilibrium

• It becomes more difficult to unbalance an object

• Your balance systems initiate a response

What is balance?

• The resistance to the disruption of equilibrium

• The ability to unbalance an object

• The ability to control equilibrium

• A subconscious response to losing stability

What is the body's response when balance is lost?

• The body decreases stability

• The body increases stability

• The balance systems initiate a response to restore equilibrium

• The balance systems make it difficult to unbalance an object

In some sports, why might it be beneficial to decrease stability?

• To make it easier to control equilibrium

• To make it easier to unbalance an object

• To increase the difficulty of the sport

• To enhance performance by allowing certain movements

Which of the following is NOT a factor affecting stability according to the image?

• Base of support

• Centre of gravity

• Body mass

• Muscle strength

What is a factor that affects that impacts someone's stability?

• Texture of the surfaces

• Size of the surfaces

• Shape of the surfaces

• Friction between the 2 connecting surfaces