Question

Estimate how long it took King Kong to fall straight down from the top of the Empire State Building (380 m high). Express your answer using two significant figures.

Answer 1

It will take 8.80 sec to fall from the building

Step-by-step explanation:

We have given height pf the state building h = 380 m

Initial velocity will be 0 m /sec

So u = 0 m/sec

Acceleration due to gravity
`g=9.8m/sec^2`

We have to find the fall time

According to second equation of motion
`h=ut+(1)/(2)gt^2`

So
`380=0* t+(1)/(2)* 9.8* t^2`

`t^2=77.55`

t = 8.80 sec