150mphは何m/sですか？
150mph = 67.056m/s
67.056m/sなので67m/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150m/sは何mphですか？
150m/s = 335.5404mph
計算式: m/s = mph × 0.44704
mph → m/s 前後の値
60 mph26.8224m/s
70 mph31.2928m/s
80 mph35.7632m/s
90 mph40.2336m/s
100 mph44.704m/s
110 mph49.1744m/s
120 mph53.6448m/s
130 mph58.1152m/s
140 mph62.5856m/s
150 mph67.056m/s
160 mph71.5264m/s
170 mph75.9968m/s
180 mph80.4672m/s
190 mph84.9376m/s
200 mph89.408m/s
210 mph93.8784m/s
220 mph98.3488m/s
230 mph102.8192m/s
240 mph107.2896m/s
250 mph111.76m/s