A 30-N Stone Is Dropped from a Height of 10

question 12

Multiple Choice

A 30-N stone is dropped from a height of 10 m and strikes the ground with a speed of 13 m/s.What average force of air friction acted on the stone as it fell?

• A)4.1 N
• B)2.9 N
• C)0.13 kN
• D)7.2 N
• E)1.2 N

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