Answer:
The velocity of a ball will be "-70.13 m/s".
Explanation:
The given values are:
u = 70 m
t = 0.0 s
g = a = -9.8 m/s²
s = -1 m
v = ?
As we know,
The equation of motion will be:
⇒ [tex]v^2-u^2=2as[/tex]
On substituting the estimated values, we get
⇒ [tex]v^2-(70)^2=2\times (-9.8)\times (-1)[/tex]
⇒ [tex]v^2-4900=19.6[/tex]
⇒ [tex]v^2=19.6+4900[/tex]
⇒ [tex]v^2=4919.6[/tex]
⇒ [tex]v=\sqrt{4919.6}[/tex]
⇒ [tex]v=70.13 \ m/s[/tex]
In downward direction, it will be:
⇒ [tex]v=-70.13 \ m/s[/tex]
