Answer:
(a) v = 32 t
h = 16 t^2
g = 32 ft/s^2
(b) 64 ft/s
Explanation:
height, h = 64 feet
g = - 32 ft/s^2
(a) Let the time is t .
Let the velocity after time t is v.
Use first equation of motion
v = u + at
- v = 0 - 32 t
v = 32 t
Let the distance is h from the top.
Use second equation of motion
![h = u t + 0.5 at^2 \\\\- h = 0 - 0.5\times 32 \times t^2\\\\h = 16 t^2](https://tex.z-dn.net/?f=h%20%3D%20u%20t%20%2B%200.5%20at%5E2%20%5C%5C%5C%5C-%20h%20%3D%200%20-%200.5%5Ctimes%2032%20%5Ctimes%20t%5E2%5C%5C%5C%5Ch%20%3D%2016%20t%5E2)
The acceleration is constant for entire motion.
(b) Let the velocity is v as it hits the ground. Use third equation of motion
![v^2 = u^2 + 2 a s \\\\v^2 = 0 + 2 \times 32\times 64\\\\v = 64 feet/s](https://tex.z-dn.net/?f=v%5E2%20%3D%20u%5E2%20%2B%202%20a%20s%20%5C%5C%5C%5Cv%5E2%20%3D%200%20%2B%202%20%5Ctimes%2032%5Ctimes%2064%5C%5C%5C%5Cv%20%3D%2064%20feet%2Fs)
I think 8.4
i learned that magnitude 8.4 earthquake had hit japan before
please give me brainlest!!
the answer is A.
You would have 50 dollars