vmedina89 vmedina89

04-05-2016
Chemistry

Answered

A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 313.6 meters B. 78.4 meters C. 1,254.4 meters D. 39.2 meters

Verified Answer :

Anonymous Anonymous

17-05-2016

The correct answer is letter A. We use the formula, v=vo + at to get the answer.

v=vo + at
v=0 + (9.8)(8)
v=78.4

y=1/2(vo + v)t
y=1/2(78.4)(8)
y=1/2(627.2)
y=313.6m

Answer Link

mahyahm23 mahyahm23

08-01-2019

The answer will be A 313.6

Answer Link

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