[physics] Air resistance

HKCEE question , about examine personal reaction time by release the ruler.

2000,Q7(a)(ii)

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If a heavier ruler is used, how would result of the above test be affected?

explan your answer.

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The answer is No. why????

If there is air resistance,

i think heavier ruler will have greater acceleration than lighter ruler.

but the question didn't reveal if there is any air resistance.

Should I have to ignore the air resistance to answer the question?

please answer question ,thx!!!

1 Answer

Rating
  • 1 decade ago
    Favorite Answer

    yes, you should ignore it

    in your level

    most of the air resistance should be ignored (the hkcee paper have written)

    the reason is for simplification

    but in a higher level (AL)

    air resistance would involve in calculation

    and your idea is correct!!!

    hope that help you:->

    Source(s): me
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