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word problem that involve speed


Sagot :

AL2006
A hockey puck is sliding on frictionless ice on an infinite hockey rink.
Its speed is 36 km/hour.  How far does the puck slide in 10 seconds ? 

 (36 km/hr) x (1,000 m/km) x (1 hr/3600 sec) x (10sec) =

         (36 x 1,000 x 10 / 3,600) meters  =  100 meters

What is the puck's speed in miles per hour ?

        (36 km/hr) x (0.6214 mi/km)  =  22.37 mi/hr