A Particle Moves a Distance Of $190 \mathrm { ft }$

question 41

Multiple Choice

A particle moves a distance of $190 \mathrm { ft }$ along a straight line. As it moves, it is acted upon by a constant force of magnitude $15 \mathrm { lb }$ in a direction opposite to that of the motion. What is the work done by the force?

• A) \(- \frac { 3 } { 38 } \mathrm { ft } - \mathrm { lb }\)
• B) \(- 2,850 \mathrm { ft } - \mathrm { lb }\)
• C) \(- \frac { 1 } { 2850 } \mathrm { ft } - \mathrm { lb }\)
• D) \(- \frac { 38 } { 3 } \mathrm { ft } - \mathrm { lb }\)

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Definitions:

Sample Sizes

The count of data points or items chosen from a larger group for the purpose of statistical examination.

Pooled-variances T-test

A statistical method for comparing the means of two populations when it is assumed that both populations have equal variances.

Population Variances

A measure of the spread of a population's values, indicating how much the members of the population differ from the population mean.

Population Means

The average value of a set of characteristics within a total population.