$[-/1$ Points$]$

SERPSE$1038\mathrm{.}0$Q$\mathrm{.}005.$

An astronaut is traveling in a spacecraft in outer space in a stralght line at a constant speed of $0\mathrm{.}650$ c $.$ Which of the following effects would she experience? $($Select all that apply.$)$

She would feel heavier.

She would find it harder to breathe.

Her heart rate would change.

Some of the dimensions of her spacecraft would be shorter.

None of those answers is correct.

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