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

question 9

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:

Finely Crystalline

Describes a rock texture that consists of small, closely-packed crystals not easily visible to the naked eye.

Calcite

A common mineral form of calcium carbonate, critical in the formation of limestone and marble, and involved in many geological processes.

Metamorphosed Fossils

Fossils that have undergone metamorphism, altering their original form and composition due to heat and pressure.

Axial Surface

An imaginary surface connecting all the hinge lines of a fold or a series of folds, often perpendicular to the direction of the fold.