Question

A helicopter hovers 200 meters over the ground and releases a relief packet. How much time does it take for the food packet to reach the ground?

Answer 1

it is a problem of gravity

Answer 2

try to solve using laws of motion

Answer 3

the time period for a half parabolic projectile is \[t=\sqrt{\frac{2h}{g}}\]

here h is the distance which is 200 m and g is the acceleration due to gravity....

I hope you will be able to find it now.........:)