A 10-Kg Block Is Pushed Across a Friction-Free Horizontal Surface

question 107

Multiple Choice

A 10-kg block is pushed across a friction-free horizontal surface with a horizontal force of 20 N.The acceleration of the block is

• A)1 m/s².
• B)2 m/s².
• C)5 m/s².
• D)10 m/s².
• E)none of the above

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Definitions:

Electron Transport Chain

A series of protein complexes that transfer electrons from electron donors to electron acceptors via redox reactions, coupled with the transfer of protons across a membrane to generate ATP.

NADH

NADH denotes Nicotinamide Adenine Dinucleotide (reduced form), a coenzyme that plays a critical role in the production of energy through the process of cellular respiration.

Pyruvate

A key intermediary in the metabolic pathway of glycolysis, which can be further converted into energy through the Krebs cycle or fermented into lactate.

Citric Acid Cycle

A key metabolic pathway that generates energy through the oxidation of acetate derived from carbohydrates, fats, and proteins into carbon dioxide and captures the released energy in the form of ATP.