Which combination of a particle's speed and journey time gives a distance travelled of exactly 100 m100\text{ m}100 m?
Speed: 10 nm s−110\text{ nm s}^{-1}10 nm s−1; Journey time: 1 Gs1\text{ Gs}1 Gs
Speed: 0.1 μm s−10.1\text{ }\mu\text{m s}^{-1}0.1 μm s−1; Journey time: 10 Ms10\text{ Ms}10 Ms
Speed: 0.1 Gm s−10.1\text{ Gm s}^{-1}0.1 Gm s−1; Journey time: 1 μs1\text{ }\mu\text{s}1 μs
Speed: 100 m s−1100\text{ m s}^{-1}100 m s−1; Journey time: 1 ms1\text{ ms}1 ms
