How much times does it take for the first black/clear part to fall through the photo gate timer, starting from the rest? Plastic
strip has 8 black stripes and 8 clear stripes the width of the black/clear pair is 5 cm.
1 answer:
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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20+130+h =180
when you solve you get h=50
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g= 50
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