At the Top of a Cliff 100 M High,Raoul Throws

question 15

Multiple Choice

At the top of a cliff 100 m high,Raoul throws a rock upward with velocity 20.0 m/s.How much later should he drop a second rock from rest so both rocks arrive simultaneously at the bottom of the cliff?

• A) 5.05 s
• B) 3.76 s
• C) 2.48 s
• D) 1.78 s

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