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Mathematics
22.04.2023 20:52
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How long will it take an object dropped from a window to fall a distance of 78.4

How long will it take an object dropped from a window to fall a distance of 78.4 meters?
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jessica3981
jessica3981
5,0(89 marks)

The time is 4 sec.

Step-by-step explanation:

Given that,

Distance = 78.4 m

We need to calculate the time

Using equation of motion

s=ut+\dfrac{1}{2}gt^2

t =\sqrt{\dfrac{2s}{g}}

Where, s = distance

g = acceleration due to gravity

t = time

t =\sqrt{\dfrac{2\times78.4}{9.8}}

t=4\ sec

Hence, The time is 4 sec.

drivinghydra
drivinghydra
4,9(79 marks)
GCF of the two numbers is 8. From there, the sum is still 120 because GCF doesn't change the problem, it is a separate problem.
Hope this helps, thank you for waiting!

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