Answer:
9.8699469e+14 and/or 986994690000000
Step-by-step explanation:
Diameter is 75/pi cm or 23.8732 cm, see attached photo for steps
For this, all you need is the velocity formula which is Vf = Vi + at.
Vf = final velocity.
Vi = initial velocity.
a = acceleration
t = time
Vf = Vi + at.
Vf= 0 + (-<span> 9.8 m/sec^</span><span>2) (7s)
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*The 0 says that the original velocity is zero. The - 9.8 m/sec^2 is gravity because there is nothing else acting upon it, and it is negative because it is falling. The 7s is time time.*
All you have to do then, is simplify to get 68.6 m/s which is B.
216/24=9
9(144)=1296
They will sell 1,296 phones in the next 144 days.