College Physics Problem 1.1

The speed limit on some interstate highways is roughly 100 km/h.
(a) What is this in meters per second?
(b) How many miles per hour is this?

SOLUTION:

a) frac{100km}{{hr}}timesfrac{1000m}{1km}timesfrac{1hour}{3600s}=27.77m/s

b) frac{100km}{h}timesfrac{1mile}{1.609km}=62mi/hr

END

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