Answer:
Vf = 15.19 [m/s]
Explanation:
To solve these problems we must use the following kinematics equation:
[tex]v_{f}=v_{i}-(g*t)\\[/tex]
where:
Vf = final velocity [m/s]
Vi = initial velocity = 25 [m/s]
g = gravity acceleration = 9.81 [m/s^2]
t = time = 1 [s]
Note: the negative sign of the equation means that the gravitational acceleration acts in the opposite direction to the movement of the stone.
Now replacing:
Vf = 25 - (9.81*1)
Vf = 15.19 [m/s]
