lyn94
01.08.2019 •
Mathematics
At a diving competition, divers jump off a 64 foot high cliff. solve for how long it will take the diver to hit the water. show your work and explain the steps you used to solve.
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Ответ:
d = Vot + 0.5gt²
Vo is the initial velocity (which is equal to zero for free-fall), g is the acceleration due to gravity and t is time.
Convert the given height in meters for consistency of the units.
d = (64 foot)(1 m/ 3.28 ft) = 19.51 m
Substituting the known values,
19.51 = 0.5(9.8)(t²)
Divide both sides of the equation by 0.5(9.8)
t² = 19.51/(0.5)(9.8) = 3.98
Then, get the square-root of both sides. This operation gives us 1.9955 seconds or equal to 2 seconds.
Ответ:
hope this helps