Question

QUESTION 3 Converting compound units is done one unit at a time. Example: What is 75 km/h in m/s? First convert km to m then h to s. This can be done in a single line. 75 km 1000m × 36005 1 h 75ー× 21 m h 1 km 3600 s Question: If 1 mile 1.609 km, what is 55 miles per hour in meters per second (m/s)?

Answer 1

"Let ""s"" be the given speed ""55 miles/hour"" therefore (S) = [55 miles/hr] = [55 times 1.609 km/3600 sec] [because (1 mile) = (1.609 km) s (1 hour) = (3600 sec)] = [88.495/3600 km/sec] = [(88.495 times 1000/3600) m/s] [because (1 km) = (1000 m)] approximatelyequalto (24.6 m/sec) implies (s) = (24.6 m/sec) is speed for speed of ""55 miles"" hour after converting to meters per second"