Answer:
Option b is right.
Step-by-step explanation:
When an object is thrown upwards, the acceleration acting is acceleration due to gravity in a negative manner.
a = -32 ft/sec square
Initial velocity let it be u
Final velocity when it reaches maximum height is 0
Use the formula connecting, u, v, a and s
[tex]v^2=u^2+2as\\0 = u^2-2(32)(800)\\u = \sqrt{64(800)} \\u = 160*0.707\\= 226.27[/tex]ft/sec
Hence we find that initial velocity is 226 ft/sec
Option b is right.