Question

The top speed of a wildebeest is 64 km/h and the top speed of a zebra is 64.4 km/h. How much faster is a zebra in feet per second? 1 km = 0.62137 miles. Round your answer to the nearest hundredths.

Answer 1

The first thing we should do in this casp is subtract both speeds.
 We have then:
 64.4 km / h - 64 km / h = 0.4 km / h
 We must know the following change of units:
 1h = 3600 s
 1pie = 0.3048m
 1km = 1000m
 Applying the change of units we have:
 0.4 * (1/3600) * (1000) * (1 / 0.3048) = 0.364537766 feet / s
 Round to the hundredths
 0.36 feet / s
 Answer:
 a zebra is 0.36 in feet per second faster.