Step-by-step explanation:
The T-shirt is launched with an initial upward velocity of 60 ft/s from a height of 5 feet. Its equation of motion is given by :
....(1)
(a) For maximum height, put 
So,

Now put,

So, the time taken for the T-shirt to reach maximum height is 2.5 seconds.
(b) Put x = 2.5 s in equation (1)
1/3 rise=1 run=2. Therefore the answer is 1/3
Answer:
48.1
Step-by-step explanation:
Seven rounds up.
Hope this helped! :)