Which of the following statements is correct?
a. Because for an object in relative motion is always less than 1, a proper time interval ?tp is always shorter than the time interval ?t and a proper length Lp is always longer than the length L.
b. Because for an object in relative motion is always greater than 1, a proper time interval ?tp is always longer than the time interval ?t and a proper length Lp is always shorter than the length L.
c. Because for an object in relative motion is always less than 1, a proper time interval ?tp is always longer than the time interval ?t and a proper length Lp is always shorter than the length L.
d. Because for an object in relative motion is always greater than 1, a proper time interval ?tp is always shorter than the time interval ?t and a proper length Lp is always longer than the length L.
a
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