marihelenh
  • marihelenh
What is the magnitude of the displacement of a car that travels half a lap along a circle of radius of 150m?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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marihelenh
  • marihelenh
@Shalante Can you help me please?
marihelenh
  • marihelenh
@triciaal
triciaal
  • triciaal
|dw:1440969538478:dw|

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triciaal
  • triciaal
displacement is equivalent to distance one lap is the perimeter of the circle= circumference = 2 * pi* r 1/2 lap = 1/2 * 2 * pi* r and r is the radius 150
marihelenh
  • marihelenh
Ok, I see how that is, but that is describing the distance. My book says displacement is the straight-line distance between two points. Would that mean I double the radius because it would be equal to the diameter?
triciaal
  • triciaal
magnitude strength
marihelenh
  • marihelenh
What does that mean?
triciaal
  • triciaal
|dw:1440970129330:dw|
triciaal
  • triciaal
no
triciaal
  • triciaal
@zepdrix thanks
triciaal
  • triciaal
@amistre64 @phi
triciaal
  • triciaal
@hero do you mind helping?
amistre64
  • amistre64
displacement is how far you are from the place you started. not how far you have traveled to get there.
marihelenh
  • marihelenh
So would I just double the radius because the car went half the circle?
amistre64
  • amistre64
yes
marihelenh
  • marihelenh
So, to be clear, the displacement would be 300m?
amistre64
  • amistre64
thats the way it looks to me yes, the car is 2 radiuses from where it started
marihelenh
  • marihelenh
Thank you! Do you know what it means by the magnitude of displacement?
amistre64
  • amistre64
magnitude is the measure of the displacement
amistre64
  • amistre64
as opposed to the direction of the displacment
marihelenh
  • marihelenh
Oooohhh. That makes a lot more sense now. Thanks!
amistre64
  • amistre64
consider displacement as a vector, it has both length and direction ...
triciaal
  • triciaal
stand corrected does this mean we are not dealing with vectors?
amistre64
  • amistre64
we are dealing with a vector, but just the magnitude of it
amistre64
  • amistre64
|dw:1440971991073:dw|
marihelenh
  • marihelenh
That makes sense to me now. I have some more questions. Could you help me with them? I am taking an advanced physics class and my teacher never explained any of this, she just assigned the homework, so I am not always sure if I am on the right track.
triciaal
  • triciaal
@amistre64 thank you for your support
amistre64
  • amistre64
physics isnt my strong point, i just know some basic stuff. ask and we can see if i can help ... if not there are others
marihelenh
  • marihelenh
Ok, great. I will start a new question.
amistre64
  • amistre64
k, and triciaal is a smart cookie ... her insight is good for the most part ;)
triciaal
  • triciaal
did advanced physics, chemistry and math but that was a long, long, long time ago

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