Using a Motion Sensor,Susana Finds That the Acceleration of a 4-Kg

question 31

Multiple Choice

Using a motion sensor,Susana finds that the acceleration of a 4-kg rock that has been dropped from the roof of a building is 6 m/s².She concludes that the magnitude of force of air resistance acting on the rock is approximately

• A)39.2 N
• B)24.0 N
• C)15.2 N
• D)9.81 N
• E)None of these is correct.

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