Q115 · Practice questionComplex familiar1 mark
QUESTION 115
A spacecraft moves at relativistic speed past Earth. Earth observers measure the spacecraft length along its motion as
(A)
zero
(B)
shorter than its proper length
(C)
longer than its proper length
(D)
equal to its proper length
WORKED SOLUTION
1 markAnswer B
ANSWER
B. shorter than its proper length
Worked solution
Length contraction gives for the frame in which the object moves.
Selects the correct option.
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
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