You throw a ball straight down from an apartment balcony to the ground below. the ball has an initial velocity of 5.00m/s, directed downward, and it hits the ground 2.00s after it is released. find the height of the balcony
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The height of the balcony may be calculated through the equation,
                                h = V₀t + 0.5gt²
where h is the height, V₀ is the initial velocity, g is the gravitational constant and t is time. Substituting the values given above,
                               h = (5 m/s)(2s) + 0.5(10 m/s²)(2 s)²
                                 h  = 30 m
Thus, the height of the balcony is 30 meters. 

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