Traditional Culture Encyclopedia - Photography major - When someone was shooting indoors with the window as the background, he happened to take a small stone falling from a height outside the window. It is known that the exposure time of this photography
When someone was shooting indoors with the window as the background, he happened to take a small stone falling from a height outside the window. It is known that the exposure time of this photography
When someone was shooting indoors with the window as the background, he happened to take a small stone falling from a height outside the window. It is known that the exposure time of this photography is 0.
( 1)X = 100 4× 1.6× 10-2m = 0.4m？
V = Xt = 0.40.02m/s = 20m/ s?
(2) From the velocity-displacement relation, we can get: v 2 =2gh?
D: h=20m？
Answer: (1) The speed of the stone during exposure is 20m/s;
(2) The height from the place where the stone begins to fall to the place where the stone is exposed is 20m. ..
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