Displacement
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1. A man walks 10m to the east followed by another 4 m to the east. What is his displacement?
2. A man walks 10m to the east followed by another 4 m to the west. What is his displacement?
3. A man walks 8 m to the east followed by another 6 m to the south. What is the magnitude of his displacement?
For question 1, is the answer 0? I'm not sure but can someone explain the 3 questions to me? -
Hope to hear second opinion on my answer, I can't confirm it's right.
From the starting point
1) 14m
He walked 10m east, followed by another 4m east. So it's 14m from the starting, and that's the amount he displaced.
2) 6m
He walked 10m east, followed by 4m west. 10 - 4 = 6m. That's the distant from the starting point he displaced.
3)
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for 'o' lvl i dun think they got teach the dunno wad AC thing
so can jus use
sqrt(6² + 8²) = 10m (-10m is rejected) -
the AC thing is AMATHsOriginally posted by wishboy:for 'o' lvl i dun think they got teach the dunno wad AC thing
so can jus use
sqrt(6² + 8²) = 10m (-10m is rejected)
Relative Velocity/Vectors
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Originally posted by bonkysleuth:
1) 14m
1. A man walks 10m to the east followed by another 4 m to the east. What is his displacement?
2. A man walks 10m to the east followed by another 4 m to the west. What is his displacement?
3. A man walks 8 m to the east followed by another 6 m to the south. What is the [b]magnitude of his displacement?
For question 1, is the answer 0? I'm not sure but can someone explain the 3 questions to me?[/b]
2) 6m
3) 14m
Distance is a scalar quantity which refers to "how much ground an object has covered" during its motion.
Displacement is a vector quantity which refers to "how far out of place an object is"; it is the object's overall change in position.
OMFG I MISS DOING MATHS! D: -
I also miss maths, but I'll be doing again 1+ year later.
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i haven learnOriginally posted by Y_Shun:the AC thing is AMATHs
Relative Velocity/Vectors 
from the looks of the 1st post, it seems to be more on the physics side? -
that chapter is physics-amathOriginally posted by wishboy:i haven learn
from the looks of the 1st post, it seems to be more on the physics side?
i think removed from syllabus liao -
erm...
14m, 6m, 10...if army hasn't make me stupid
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Just realised I got number 3 wrong
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O level Emath also got, but my cher just rush through.. If I am not wrong, it's a small part of a chapter just before Vectors..Originally posted by Y_Shun:that chapter is physics-amath
i think removed from syllabus liao