Question

The average height of an apple tree is 4.00 meters. How long would it take an apple falling from that height to reach the ground? Given: g = –9.8 meters/second2

Answer 1

The time is 0.90 sec.

Step-by-step explanation:

Given that,

Height = 4.00 m

We need to calculate the time

Using equation of motion

`s = ut-(1)/(2)(-g)t^2`

For free fall, u = 0

`t =\sqrt{(2s)/(g)}`

Where, s = distance

g = acceleration due to gravity

t = time

Put the value into the formula

`t =\sqrt{(2*4.00)/(9.8)}`

`t= 0.90\ sec`

Hence, The time is 0.90 sec.