Answer
The total displacement of the object is 320 m
Solution-
From the formulas of mechanics,
[tex]s=ut+\frac{1}{2}at^{2}[/tex]
Where,
s = displacement
u = initial velocity = 0 ( ∵ As the body was in rest in the beginning )
t = time taken = 8 s
a = acceleration = -10 m/s² ( ∵ -ve is because of the downward motion)
Putting all the values,
[tex]s= 0 \times 8 + \frac{1}{2}(-10)8^{2} = -320 \ m[/tex] ( ∵ -ve displacement means it is in downwards)
