Answer:
Final velocity will be 36.11 m/sec
Time required by ball to heat the ground = 1.297 sec
Explanation:
We have given height = 50 feet
Initial velocity u = 18 ft/sec
Acceleration due to gravity [tex]g=32.8ft/sec^2[/tex]
We have to find final velocity v
From third equation of motion
[tex]v^2=u^2+2gh[/tex]
So [tex]v^2=18^2+2\times 32.8\times 50=3543.82[/tex]
v = 59.53m/sec
From first equation of motion we know that
v= u+gt
So [tex]59.53=18+32.8\times t[/tex]
t = 1.297 sec
