Asked Feb 4, 2019

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?


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:


Step 3

From Newton's se...


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