If each frame of a motion picture film is 35 cm high, and 24 frames go by in a second, estimate how many frames are needed to show a two hour long movie.
Question 1 options:
2) 25 000
3) 50 000
4) 170 000
5) This cannot be determined without knowing how many reels were used.
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and I don't see why the height on the film is relevant
24 frame per second X
3600 seconds per hour X
2 hoursX = 172800
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Ok, so why did they tell the height in there?
height is extraneous information , I believe
Ah, do they do that a lot in physics? Because I was trying forever to figure out why that was in there
Mk, thanks man
They (we!) do it for a good reason. One of the important things to figure in science is what is information is germane to the problem, what information is relevant.
For what it's worth, this is also very true in business, so it's good training for the life in the real world, as well as being good science.