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secondary 4 | A Maths
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secondary 4 A Maths Singapore

Hi.. Please help me with this question , Thank you for your time and effort!!

Date Posted: 4 years ago

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Date Posted: 4 years ago

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Sonia

4 years ago

Hello! May i ask why did you sub t=2 for part (ii) ? I don’t quite understand how come we can do this..

Jiayang

4 years ago

Cus at t=2, the particle made a u-turn. We know this because at t=2, v= 0 and at t=6, the particle is back at O. So we know the furthest the particle is away from O is at t=2. And since the distance back to O is the same, we simply have to multiply by 2.

Sonia

4 years ago

Ohh okie! Thank you so muc ^^

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