A 30-Kg Block Slides on a Rough Horizontal Surface

question 91

Multiple Choice

A 3.0-kg block slides on a rough horizontal surface. A force of 8.0 N acting parallel to the surface is applied to the block. The coefficient of kinetic friction between the block and the surface is 0.15. What is the magnitude of the block's acceleration?

• A) 1.9 m/s²
• B) 1.2 m/s²
• C) 2.3 m/s²
• D) 1.5 m/s²
• E) 2.9 m/s²

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Definitions:

HBr

Hydrobromic acid, a strong acid formed by dissolving hydrogen bromide in water, used in organic synthesis and as a catalyst.

Addition

A chemical reaction where two or more substances combine to form a single product, often involving the breaking of double or triple bonds.

Anhydrous HCl

Hydrogen chloride gas or any form of hydrochloric acid that does not contain water.

1,3-Pentadiene

An organic compound with a chain of five carbon atoms, containing two double bonds located at positions 1 and 3.