Solve the Problem. -The Grade Resistance F of a Car Traveling Up or Traveling

question 134

Multiple Choice

Solve the problem.
-The grade resistance F of a car traveling up or down a hill is modeled by the equation F = W sin ϴ, where W is the weight of the car and ϴ is the angle of the hill's grade (ϴ > 0 for uphill travel, ϴ < 0
For downhill travel) . What is the grade resistance (to the nearest pound) of a 2100-lb car traveling
Downhill on a 5° grade (ϴ = -5°) ?

• A)183 lb
• B)-2105 lb
• C)2105 lb
• D)-183 lb

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Definitions:

Back-arc Rifting

A geological process occurring behind a volcanic arc, involving the stretching and cracking of the Earth's crust, leading to the formation of a new ocean basin.

Island Arcs

Curved chains of volcanic islands that are usually situated along the edge of a tectonic plate, created by the subduction of an oceanic plate beneath another plate.

Island Arcs

Curved chains of volcanic islands that form along the boundaries of Earth's tectonic plates, generally over a subducting plate.

Mid-ocean Ridge

An underwater mountain range, formed by plate tectonics, that encircles the globe and is the site of new oceanic crust formation.