You stand at the top of a cliff while your
Chapter 2, Problem 2.82(choose chapter or problem)
You stand at the top of a cliff while your friend stands on the ground below you. You drop a ball from rest and see that she catches it 1.4 s later. Your friend then throws the ball up to you, such that it just comes to rest in your hand. What is the speed with which your friend threw the ball
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