Answer:
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 ,
[tex]h =\frac{ 1}{2} gt^2[/tex]
where
h is the maximum height
g is acceleration due to gravity
t is the time taken
Substituting the known values,
[tex]h= \frac{1}{2}({9.8}\times{7^2})[/tex]
[tex]h= \frac{1}{2}({9.8}\times{49})[/tex]
[tex]h= \frac{1}{2}(480.2)[/tex]
h=240.1 metres
