Question

calculate the average speed (in km/h) of a car stuck in traffic that drives 12 kilometers in 2 hours.

Answer 1

\[Avgerage speed =\frac{ \Delta d }{ \Delta t }\]

Answer 2

So, the average speed is just:
\[\frac{ 12 km}{ 2h }\]
which is just 6km/h

Answer 3

Also, \[\Delta d\ and\ \Delta t\]
just mean the change of distance and the change of time.
So, \[\Delta d = d _{2} -d _{1} \]
\[\ d _{1} \] is the original position or start point
\[\ d _{2} \] is the ending position
The same goes for
\[\Delta t = t _{2} -t _{1} \]

Answer 4

thank you so much!

Answer 5

No problem, but you understand the concept of "average speed" is, right?
If you don't: please don't hesitate to ask.