500ft/sは何m/sですか？
500ft/s = 152.4m/s
152.4m/sなので152m/sと言っても差し支えありません — 誤差は0.5%以内です。
逆に500m/sは何ft/sですか？
500m/s = 1,640.4199ft/s
計算式: m/s = ft/s × 0.3048
ft/s → m/s 前後の値
50 ft/s15.24m/s
100 ft/s30.48m/s
150 ft/s45.72m/s
200 ft/s60.96m/s
250 ft/s76.2m/s
300 ft/s91.44m/s
350 ft/s106.68m/s
400 ft/s121.92m/s
450 ft/s137.16m/s
500 ft/s152.4m/s
550 ft/s167.64m/s
600 ft/s182.88m/s
650 ft/s198.12m/s
700 ft/s213.36m/s
750 ft/s228.6m/s
800 ft/s243.84m/s
850 ft/s259.08m/s
900 ft/s274.32m/s
950 ft/s289.56m/s
1,000 ft/s304.8m/s