A Freely Falling Body Has a Constant Acceleration of 9

question 38

Multiple Choice

A freely falling body has a constant acceleration of 9.8 m/s².This means that:

• A)the body falls 9.8 m during each second
• B)the body falls 9.8 m during the first second
• C)the speed of the body increases by 9.8 m/s during each second
• D)the acceleration of the body increases by 9.8 m/s² during each second
• E)the acceleration of the body decreases by 9.8 m/s² during each second

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Definitions:

Buffers

Substances that minimize changes in the pH of a solution when an acid or base is added to it, helping to maintain stability in biological systems.

α-Helix

A common motif in the secondary structure of proteins, characterized by a right-handed coiled or spiral shape, where the amino acid residues are arranged in a helical structure.

Secondary

Pertaining to a secondary stage or level, implying it follows a primary stage and usually is dependent on or results from it.

β-Pleated Sheet

A structure in protein secondary structure, characterized by sheet-like formations of hydrogen-bonded polypeptide chains.