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Physics
Problem
A bus travels
60
km
60\,\text{km}
60
km
at
40
km/h
40\,\text{km/h}
40
km/h
and then another
40
km
40\,\text{km}
40
km
at
60
km/h
60\,\text{km/h}
60
km/h
. Calculate the bus’s average speed for the entire
100
km
100\,\text{km}
100
km
journey. a)
44
km/h
44\,\text{km/h}
44
km/h
b)
48
km/h
48\,\text{km/h}
48
km/h
c)
46
km/h
46\,\text{km/h}
46
km/h
d)
50
km/h
50\,\text{km/h}
50
km/h
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