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p02_002.pdf

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This document discusses converting speed from km/h to m/s to calculate the time taken to travel a distance. It uses an equation to calculate that a speed of 110.6 km/h over a distance of 200m would take 6.510 seconds. It notes that the conversion was done by changing each unit individually, but a direct one-step conversion factor is provided in an appendix.

2. Converting to SI units, we use Eq. 2-3 with d for distance.
savg =
d
t
(110.6 km/h)

1000 m/km
3600 s/h

=
200.0 m
t
which yields t = 6.510 s. We converted the speed km/h → m/s by converting each unit (km → m, h → s)
individually. But we mention that the “one-step” conversion can be found in Appendix D (1 km/h =
0.2778 m/s).

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p02_002.pdf

1. 2. Converting to SI units, we use Eq. 2-3 with d for distance. savg = d t (110.6 km/h) 1000 m/km 3600 s/h = 200.0 m t which yields t = 6.510 s. We converted the speed km/h → m/s by converting each unit (km → m, h → s) individually. But we mention that the “one-step” conversion can be found in Appendix D (1 km/h = 0.2778 m/s).