One day on a spacecraft corresponds to $2$ days on the earth. The speed of the spacecraft relative to the earth is
One day on a spacecraft corresponds to $2$ days on the earth. The speed of the spacecraft relative to the earth is
- A
$1.5 \times {10^8}m{s^{ - 1}}$
- B
$2.1 \times {10^8}m{s^{ - 1}}$
- C
$2.6 \times {10^8}m{s^{ - 1}}$
- D
$5.2 \times {10^8}m{s^{ - 1}}$
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