Mathematics
kimmythibodeau
6

a stone falls from a ledge and takes 8 seconds to the hit the ground. the stone has an original velocity of 0 m/s. how tall is the ledge?

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(2) Answers
Llama11

Using equation of motion. S = ut + (1/2)gt² Where S = Height, t = time, g = acceleration due to gravity = 9.8 m/s² time, t = 8 seconds  Since it was dropped from height, initial velocity, u = 0 S = 0*t + (1/2)gt² S = (1/2)gt² S = (1/2)*9.8*8²  = 4.9 * 8 * 8 =  313.6 Therefore the ledge is 313.6 m tall.

saxjoxero13

If it is moving at 0m/s then it isn't even moving...

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