MTTC 103 Elementary Practice Exam 2025 – Complete Study Guide

Pounds per second represents a measurement of weight in relation to time, which falls under the category of customary units of measure. Customary units, primarily used in the United States, include various units of weight (like pounds), volume, and distance. The term "pounds" refers to a common unit of weight within the customary system, while "per second" indicates a rate or speed. This aligns well with the customary framework of measurement that is prevalent in many everyday contexts in the U.S., such as in cooking, construction, and manufacturing.

Nonstandard units of measure typically refer to informal or ad-hoc measurements that do not have a consistent, widely accepted definition, and metric units would involve measurements using the metric system, such as grams or liters. Elapsed time refers specifically to measuring the passage of time rather than a rate of weight. Therefore, pounds per second is appropriately categorized under the customary unit of measure.