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secondary 4 | A Maths
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Hi.. Please help me with this question , Thank you for your time and effort!!
Date Posted: 4 years ago
Views: 212
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hope this helps. jiayou!
Date Posted:
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..
Hi Sonia!
The object went from the origin to the furthest point at t=2s, as can be seen on the s-t graph.
(We’ve calculated t=2s to give a maximum point of displacement earlier)
The object then returned from the furthest point to the origin by t=6s.
The whole journey was to and fro the origin to the furthest point. As such you just need to find the distance travelled one way and multiply by 2.
The object went from the origin to the furthest point at t=2s, as can be seen on the s-t graph.
(We’ve calculated t=2s to give a maximum point of displacement earlier)
The object then returned from the furthest point to the origin by t=6s.
The whole journey was to and fro the origin to the furthest point. As such you just need to find the distance travelled one way and multiply by 2.
Ahh.. i see ! Thank you :)
Also, sorry for the late reply. I hope I’ve managed to answer your queries in time! Feel free to message me directly regarding any other queries abt this question. Am willing to help
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