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3 years ago

11

Calculate (a) how long it took King Kong to fall straight down from the top of the Empire State Building (380 m high). **** (use

the data from above)
a 0.00 s
b 3.94 s
c 8.80 s
d 846 s

1 answer:

Shtirlitz [24]3 years ago

3 0

Answer:

c 8.80 s

Explanation:

Given parameters:

Height of Empire State Building = 380m

Unknown:

Time taken for King Kong to fall = ?

Solution:

To solve this problem, we use one of the kinematics equation.

The appropriate one is given below;

H = ut + $\frac{1}{2}$ g t²

H is the height

t is the time taken

g is the acceleration due to gravity

380 = (0 x t) + ( $\frac{1}{2}$ x 9.8 x t²)

380 = 4.9t²

t² = 77.55

t = 8.8s

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