Question: Imagine a cube 3 0 cm on a side. About how fast would this cube have to be moving relative to you if in your

Imagine a cube

30

cm on a side. About how fast would this cube have to be moving relative to you if in your frame it was as thin as a sheet of paper in the direction of its motion?

(

Hints: You may find the approximation discussed in

\ (\

square

\)

problem R

6

. 1

useful. Also, can you think of an easy way to estimate the thickness of a sheet of paper?

)

Imagine a cube 3 0 cm on a side. About how fast

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