Solve the Problem $\mathrm { v } = \sqrt { 2.5 \mathrm { r } }$

question 92

Multiple Choice

Solve the problem.
-The formula $\mathrm { v } = \sqrt { 2.5 \mathrm { r } }$ models the safe maximum speed, $\mathrm { v }$ , in miles per hour, at which a car can travel on a curved road with radius of curvature, $r$ , in feet. A highway crew measures the radius of curvature at an exit ramp as 360 feet. What is the maximum safe speed?

• A) 30 mph
• B) 36 mph
• C) 27 mph
• D) 35 mph

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Definitions:

Applied Voltage

The voltage that is externally applied to a circuit or component to drive its operation.

Fuse

A safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.

Excessive Current

A current flow surpassing the designed or safe limit of an electrical circuit or device, potentially leading to overheating or damage.

Total Resistance

The sum of all resistances in an electrical circuit, affecting the overall current flow.