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A stone is droped from a window It hits the ground after 4 s How high is the window?
Wiki User
∙ 14y ago
speed due to gravity 10 m/s, d=s x t = 4s x 10 = 40 m
The above answer is 100 percent wrong.
distance s, in a gravitational field, is calculated as follows:
s = (v0 * t) + 1/2 * a * t^2
where
v0 is the initial velocity, if any
a is the accelaration due to gravity, or 9.8 meters per second squared at the earth's surface
t is the time in seconds
Since the initial velocity is zero (the stone is dropped, not thrown) the first expression results in zero, the first expression may be dropped, and the equation is simplified.
s = 1/2 a * t^2
s = 9.8 / 2 * t * t
s = 78.4 meters
Wiki User
∙ 14y ago
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