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primary 6 | Maths | Speed
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UK101
UK101

primary 6 chevron_right Maths chevron_right Speed chevron_right Singapore

yo

Date Posted: 3 months ago
Views: 22
Eric Nicholas K
Eric Nicholas K
3 months ago
It’s something to do with blocking. Imagine the sun shining at you. If something moves to block you, the sun will not be shining at you, correct?

Same idea. At the point where the ball passes the hole, there is no light detected since the ball is the one receiving the light.

At first, the intensity is more than zero. When the ball passes through, the graph goes down to zero. Once the ball passes through and there is no blockade, the graph goes back up again. This process repeats itself again.

There are four occurrences of the graph going down to zero, hence the ball passes four times.

Some horizontal lines at zero are longer than the rest. This shows that the balls travel at different speeds. Longer lines come about because the ball passes the hole more slowly (and hence, more time is needed to pass the hole, explaining the longer length).
Irah Athirah
Irah Athirah
3 months ago
isn't that the same question being asked as Tishar?

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Tishar
Tishar's answer
1 answers (A Helpful Person)
1st
Here is yoir ans
UK101
UK101
3 months ago
FUCK U
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Tan Y J
Tan Y J's answer
16 answers (A Helpful Person)
Not sure if you need a more detailed explanation for part c