Respuesta :
The vertical speed is 7 m/s. Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path.
The rate at which an airplane ascends, or falls is known as vertical airspeed. The two are distinct from ground speed. The rate of climb, or vertical airspeed of the aircraft, is tracked by the rate of descent, or sink rate, which measures how quickly the aircraft is descending. A projectile's vertical velocity changes by 9.8 m/s per second, and its horizontal motion is unrelated to its vertical motion.
v is final velocity and u is the initial velocity, then v^2 = u^2+2gs
0= u^2 -2(9.8) (2.5)
u^2= 5(9.8)
u^2=10(4.9)
u^2=49
u=7 m/s
Learn more about velocity here-
https://brainly.com/question/18084516
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