Using a Motion Sensor,Sean Finds That the Acceleration of a 2-Kg

question 11

Multiple Choice

Using a motion sensor,Sean finds that the acceleration of a 2-kg rock that has been dropped from the roof of a building is 5.5 m/s².He concludes that the magnitude of force of air resistance acting on the rock is approximately

• A)19.6 N
• B)11.0 N
• C)9.81 N
• D)6.62 N
• E)None of these is correct.

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