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Special relativity — Question 210

Original QCE Vault practice · 1 mark

Q210 · Practice questionComplex familiar1 mark

QUESTION 210

A rectangular panel has rest-frame dimensions 4.00 m4.00\,\mathrm m horizontally and 3.00 m3.00\,\mathrm m vertically. It moves horizontally at 0.600c0.600c relative to a laboratory. What dimensions does the laboratory measure simultaneously in its own frame?
A rectangular panel in its rest frame is dimensioned 4.00 m horizontally and 3.00 m vertically. A separate arrow indicates horizontal motion at 0.600c relative to the laboratory. Not to scale.
(A)
3.20 m3.20\,\mathrm m horizontally and 3.00 m3.00\,\mathrm m vertically
(B)
3.20 m3.20\,\mathrm m horizontally and 2.40 m2.40\,\mathrm m vertically
(C)
5.00 m5.00\,\mathrm m horizontally and 3.00 m3.00\,\mathrm m vertically
(D)
4.00 m4.00\,\mathrm m horizontally and 2.40 m2.40\,\mathrm m vertically
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