Asked by confused
A car on the highway travels at 90 km/hr. Express this speed in m/s. can yall show me how to convert this
Answers
Answered by
bobpursley
Sure: Use unit conversion factors. Notice how the undesired units divide out.
Speed=90km/hr * [1000m/1km]*[1hr/3600sec]
lets do it harder: convert to miles/minute
speed=90km/hr* [1hr/60min]*[1000m/1km]*[1 mile/1609m]
The theory of this is one can multipy any measurement by one unit, and it remains intact. Examples:
1mile=5280ft: Unit conversion factors could be 5280ft/mile=1=1mile/5280
16oz=1lb: unit conversions could be 16oz/1lb=1=1lb/16oz
You use them in the form to convert to the units you need.
Speed=90km/hr * [1000m/1km]*[1hr/3600sec]
lets do it harder: convert to miles/minute
speed=90km/hr* [1hr/60min]*[1000m/1km]*[1 mile/1609m]
The theory of this is one can multipy any measurement by one unit, and it remains intact. Examples:
1mile=5280ft: Unit conversion factors could be 5280ft/mile=1=1mile/5280
16oz=1lb: unit conversions could be 16oz/1lb=1=1lb/16oz
You use them in the form to convert to the units you need.
Answered by
Henry
Speed = 90,000m/h * 1h/3600s = 25 m/s.
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