An Object Hits a Wall and Bounces Back with Half

question 48

Multiple Choice

An object hits a wall and bounces back with half of its original speed. What is the ratio of the final kinetic energy to the initial kinetic energy?

• A) 1/2
• B) 1/4
• C) 2
• D) 4
• E) 8

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Definitions:

Krebs Cycle

A series of enzymatic reactions in mitochondria that generate ATP through the oxidation of acetyl-CoA, central to cellular respiration.

Water-Soluble Vitamin

Vitamins that dissolve in water and are not stored in the body, thus requiring regular intake, such as vitamin C and B vitamins.

Scurvy

A disease resulting from a deficiency of vitamin C, leading to symptoms such as anemia, debility, and gum disease.

Vitamin C

An essential nutrient that acts as an antioxidant, supports the immune system, and is necessary for the synthesis of collagen.