Answer:
88.12 m/s
Step-by-step explanation:
The velocity-time-displacement equation is given by
v² = u² + 2ad
where
d = displacement
u = initial velocity
a = acceleration
v = final velocity
Plugging in known values for
u = 95 m/s,
a = -10 m/s² (acceleration is negative because it is in the opposite direction to gravity)
d = 63 m
We get
v² = 95² + 2 (-10) (63)
v² = 9025 - 1,260
v² = 7765
So v = √7765
v = 88.119 m/s = 88.12 m/s