Kinematics and Calculus Watch

Y12_FurtherMaths
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Can someone help me with question 6 please. The book says the answer is 4s but I get 4.70 and I don’t know where I’ve gone wrong. Thanks
https://imgur.com/a/WneOaZb
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Notnek
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(Original post by Y12_FurtherMaths)
Can someone help me with question 6 please. The book says the answer is 4s but I get 4.70 and I don’t know where I’ve gone wrong. Thanks
https://imgur.com/a/WneOaZb
I get 4s. Can you please post your working?
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Y12_FurtherMaths
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(Original post by Notnek)
I get 4s. Can you please post your working?
Working is attached in the image. Scroll down?
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Y12_FurtherMaths
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(Original post by Notnek)
I get 4s. Can you please post your working?
Just realised my mistake!
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Notnek
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(Original post by Y12_FurtherMaths)
Working is attached in the image. Scroll down?
Sorry I didn't scroll down

Your equation for s is the displacement from the origin not the displacement from it's starting position. You know this because s = -4 at t = 0. So at the origin s = 0.
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Y12_FurtherMaths
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(Original post by Notnek)
Sorry I didn't scroll down

Your equation for s is the displacement from the origin not the displacement from it's starting position. You know this because s = -4 at t = 0. So at the origin s = 0.
Yeah just noticed, thanks
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