Question
Asked Feb 4, 2019
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A rock of mass 51.2 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 15.7 N. What is the magnitude of the acceleration of the rock?

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Expert Answer

Step 1

Given:    mass of the rock (m) = 51.2 kg

                   opposing force (R) = 15.7N

Find:     Acceleration(a)

Step 2

Forces that are acting on the rock are as shown in the figure:

 

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Step 3

From Newton's se...

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