Drop a Rock from a 5-M Height and It Accelerates

question 5

Multiple Choice

Drop a rock from a 5-m height and it accelerates at 10 m/s2 and strikes the ground 1 s later. Drop the same rock from a height of 2.5 m and its acceleration of fall is

• A)about half.
• B)the same.
• C)twice as much.

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Definitions:

Substance

A form of matter with distinct properties and composition; can be either an element or a compound.

Synthetic Chemical Reactions

Chemically engineered processes to form new substances from one or more reactants, involving the breaking and forming of bonds.

Enzymes

Biological molecules that act as catalysts to speed up chemical reactions in living organisms.

Green Chemistry

The design of chemical processes and products that reduce or eliminate the use and generation of hazardous substances, promoting sustainability.