A helicopter is flying (moving) from 180 m from land ,at constant velocity of 45 ms-1 . If an object falls down from that helicopter, how much time it will take to reach the land? ( please provide accurate answer with steps, equations)

It will take 3.0 s

Step by step explanation:-

We want to find the time it will take the object to reach the land.

To do this, we apply one of Newtons equations of motion:

where s= distance/height

u = initial velocity

g = acceleration due to gravity

t = time

From the given question, we have :

Now substitute the given values into the equation and solve for t :

Solving the above quadratic equation, using quadratic formula :

Since time cannot be negative,

So, it will take 3.0 s to reach the land.

6/12=1/2

step-by-step explanation: