Question

Estimate how long it took King Kong to fall straight down from the top of the Empire State Building (380m high)

Answer 1

The required time is t = 8.8 [sg]

Step-by-step explanation:

The solution to this problem can be achieved by means of the kinematics equations, where each of the variables y = 0, y0= 380 [m], g is the gravitational acceleration = 9.81[m/s^2], as the body falls in free fall the initial velocity is zero.

`y=y_(0) + v_(0)*t-(1)/(2)*g*t^(2)   \\\\where\\v_(0) =0\\y=0[m]\\`

`0=-380+(0)*t-(1)/(2) *(9.81)*t^(2) \\\\t=\sqrt{(380*2)/(9.81) } \\t=8.8 [sg]`