Solve the Problem
-A Person Is Pulling a Freight Cart $20 ^ { \circ }$

question 180

Multiple Choice

Solve the problem
-A person is pulling a freight cart with a force of 57 pounds. How much work is done in moving the cart 70 feet if the cart's handle makes an angle of $20 ^ { \circ }$ with the ground?

• A) \(3749.4 \mathrm { ft } - \mathrm { lb }\)
• B) \(1364.7 \mathrm { ft } - \mathrm { lb }\)
• C) \(136.5 \mathrm { ft } - \mathrm { lb }\)
• D) \(3854 \mathrm { ft } - \mathrm { lb }\)

---

Definitions:

Optic Nerve

The optic nerve is a paired nerve that transmits visual information from the retina to the brain.

Iris

The colorful segment of the eye that modulates pupil dimension and the level of light that gets in.

Trichromatic Receptor Theory

A theory of color vision stating that the human eye has three types of receptors with differing sensitivities to light wavelengths, corresponding to red, green, and blue colors.

Negative Afterimages

Visual illusions that occur when looking away after staring at an image for a period, resulting in seeing a complementary color or shadow of the original.