Answer:
t = 6 s
Step-by-step explanation:
Given that,
A chair is thrown upward from a balcony that's 96 ft in the air, d = 96 ft
The initial velocity of chair, u = 16 ft/s
We need to find how many seconds does the chair take to reach its highest height. Let the time is t.

Hence, the chair take 6 seconds to reach its maximum height.