Answer :
s = Kt - 16t^2
setting s = 550
550 = Kt - 16t^2
this will reach the highest point when v = 0
t = K/32
when t = K/32
550 = K^2/32 - K^2/64
K^2 = 550*64
K = 187.62 ft/s
setting s = 550
550 = Kt - 16t^2
this will reach the highest point when v = 0
t = K/32
when t = K/32
550 = K^2/32 - K^2/64
K^2 = 550*64
K = 187.62 ft/s