Answer:
5 sec
Step-by-step explanation:
Hit the water, means h = 0
Solve -16t^2 + 68t +60 =0
4t^2 - 17t - 15 = 0
(4t + 3)(t - 5) = 0
so t = 5 sec
(4)(4)(4) is best expressed as 4³;
00 is suspicious; did you possibly mean 0² (which still looks odd)?
(s)(s)(s) = s³
Then:
(4)(4)(4)00(s)(s)(s) = 4³·0²·s³, or just 0.
Answer: im pretty sure its 2 km