a piano, mass unknown, is being hoisted up by a crane to the second floor of...
a piano, mass unknown, is being hoisted up by a crane to the second floor of a building when the rope snaps. The piano drops 14 meters. What speed does it have just as it hits the ground? please explain why a certain formula is used
Homework Answers
v^2 = u^2 + 2gh
here u = 0
v = sqrt(2gh)
v = 16.57 m/s
here I used this equation because we want to know the final speed , height and initial speed are known
so I used motions third equation
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