A Billiard Ball Collides in an Elastic Head-On Collision with a Second

question 79

Multiple Choice

A billiard ball collides in an elastic head-on collision with a second identical ball.What is the kinetic energy of the system after the collision compared to that before collision?

• A)the same as
• B)one fourth
• C)twice
• D)four times

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Definitions:

Epinephrine

A hormone and medication, also known as adrenaline, used to treat severe allergic reactions and cardiac arrest by increasing blood flow and relaxing airways.

Cortisol

A steroid hormone produced by the adrenal gland that regulates a wide range of processes throughout the body, including metabolism and the immune response.

Progressive Muscle Relaxation

A technique aimed at reducing stress and anxiety by tensing and then relaxing muscle groups in a specific sequence.

Deep Breathing Exercises

A relaxation technique focusing on slow, deep, and controlled inhalations and exhalations, used to reduce stress and improve respiratory function.