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secondary 4 | A Maths
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Irene
Irene

secondary 4 chevron_right A Maths chevron_right Singapore

Hi, I'm able to get the answers for everything except the displacement in part (I). The answer that the book gave is 5.31m but I just can't get it. Thanks!

Date Posted: 5 years ago
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Eric Nicholas K
Eric Nicholas K's answer
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Good afternoon Irene! Here are my workings for the displacement part of part i.

Two things you have to look out for.

First, if you have set O to the zero metre mark, your constant of integration, c, is not equal to zero because cos 0 is equal to 1, not zero.

Second, your calculator needs to be in radian form.

Let me know if you need more explanation for this part or need my workings for the rest of this question and I will do my best to help you!