A 10 Kg-Ball Moving at 2

question 73

Multiple Choice

A 1.0 kg-ball moving at 2.0 m/s perpendicular to a wall rebounds from the wall at 1.5 m/s. The change in the momentum of the ball is:

• A) zero
• B) 0.5 N. s away from wall
• C) 0.5 N . s toward wall
• D) 3.5 N .s away from wall
• E) 3.5 N .s toward wall

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Definitions:

Erythema

Reddening of the skin caused by increased blood flow to the superficial capillaries, often a sign of injury or inflammation.

Inflammation

A protective response by the body's immune system to injury or infection, characterized by swelling, redness, warmth, and sometimes pain.

Hand Hygiene

The practice of washing hands with soap and water or using a hand sanitizer to remove germs, dirt, and other contaminants.

Alcohol-based Solutions

Disinfectants that use alcohol as the primary ingredient, effective in killing bacteria and viruses on surfaces and skin.