The observation deck of tall skyscraper370 m above the street. Determi

1.	The observation deck of tall skyscraper370 m above the street. Determine thetime required for a penny to free fall fromthe deck to the street below.
Answer» Given: vi = 0 m/s d = -370 m a = -9.8 m/s2 Find: t = ??d = vit + 0.5at2-370 m = (0 m/s)(t)+ 0.5(-9.8 m/s2)(t)2 -370 m = 0+ (-4.9 m/s2)*(t)2 (-370 m)/(-4.9 m/s2) = t2 75.5 s2 = t2 t = 8.69 s

The observation deck of tall skyscraper370 m above the street. Determine thetime required for a penny to free fall fromthe deck to the street below.

Answer»

Given:

vi = 0 m/s

d = -370 m

a = -9.8 m/s2

Find:

t = ??d = vi*t + 0.5*a*t2-370 m = (0 m/s)*(t)+ 0.5*(-9.8 m/s2)*(t)2

-370 m = 0+ (-4.9 m/s2)*(t)2

(-370 m)/(-4.9 m/s2) = t2

75.5 s2 = t2

t = 8.69 s