Answer :
Answer:
The 20.6 m/s will be the speed of ball after 3 seconds.
Explanation:
Initial velocity of the ball = u = 50 m/s
Final velocity of the ball = v = ?
Acceleration due to gravity = a = [tex]-9.8m/s^2[/tex]
( ball is thrown against the gravity)
[tex]v=u-gt[/tex] (first equation of motion)
[tex]v=50 m/s-9.8 m/s\times 3s[/tex]
[tex]v = 20.6 m/s[/tex]