Answer:
The velocity is 39.24 m/s
Explanation:
The time of fall t = 4 seconds
The initial velocity u = 0 m/s (since the ball is dropped, meaning it starts from rest)
Final velocity v = ?
Using
v = u + gt
where g is the acceleration due to gravity = 9.81 m/s^2
substituting, we'll have
v = 0 + (9.81 x 4)
v = 39.24 m/s
