B. 6
Explanation: 8(6+4)= 80
38+ 7(6)= 80
I can figure out this is a frefall motion.
Starting from rest => Vo = 0
Then, use the equation: d = [1/2]gt^2 => t = √(2d/g)
d = width of a black/clear stripe pair = 5cm = 0.05m
g ≈ 10 m/s^2 (the real value is about 9.81 m/s^2)
t =√(2*0.05m/10m/s^2) = 0.1 s
Answer: approximately 0.1 s
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Answer:
n<4+9
n<13
Step-by-step explanation:
The numbers would be -1, 0, 1, 2.
Hope this helps
