# Kinematics and CalculusWatch

#1
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
0
1 week ago
#2
(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
0
#3
(Original post by Notnek)
Working is attached in the image. Scroll down?
0
#4
(Original post by Notnek)
Just realised my mistake!
0
1 week ago
#5
(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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#6
(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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