Aobject is launched into the air vertically from ground level and hits the ground after 7 seconds. what was the maximum height of the object?

understanding that, at the max height:
velocity = 0 and acceleration = 9.8

The maximum height of the object is 240.1 metres

Explanation:

Given:

time after which the object reaches the ground =  7 seconds

To Find:

Maximum height the object travelled = ?

Solution:

Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. Then the maximum height travelled by the object can be found by ,

where

h is the maximum height

g is acceleration due to gravity

t is the time taken

Substituting the known values,

h=240.1 metres

f is prop to m1xm2 double m1 double force

do you have a formula possibly