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questions
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i attached the diagram.
a) the object whose world line is labeled B is moving along the x-axis T or F?
I said false because yes while it is moving along the x-axis it's also moving along the y-axis. So it's moving in two dimensions not just one. is my answer and reasoning correct?
The world line for object E (a completely horizontal world line) cannot possibly be correct right? The reason behind this is because it has a slope of zero and it must have a slope of one or greater. Having a slope of 1 or less than one means that the object is traveling at the speed of light or faster than the speed of light which is not possible.
a) the object whose world line is labeled B is moving along the x-axis T or F?
I said false because yes while it is moving along the x-axis it's also moving along the y-axis. So it's moving in two dimensions not just one. is my answer and reasoning correct?
The world line for object E (a completely horizontal world line) cannot possibly be correct right? The reason behind this is because it has a slope of zero and it must have a slope of one or greater. Having a slope of 1 or less than one means that the object is traveling at the speed of light or faster than the speed of light which is not possible.