A scooter's odometer shows 23 715 km at the start of a trip and 23 805 km at the end…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A scooter's odometer shows at the start of a trip and at the end. The trip took hours.
- How far did it travel?
- What was its average speed, in km/h and m/s?
- At one moment the speedometer showed . Is that the average speed?
Need a reminder? The key ideaShow
Speed distance time; velocity displacement time. Average speed total distance total time. .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) .
Step 2. (b) , and .
Step 3. (c) No. The speedometer shows the speed at one moment only.
Answer: ; or ; no.
Check. is more than the average, which is fine: the scooter also went slower or stopped.
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