Question

Freeways in Australia have a maximum speed of 100kph (27.78m/s)
An average speed camera measured the time over the course of 5km and found that it took me exactly 2 minutes and 52 seconds to travel that distance…

What was my average speed?
Answer to the nearest whole number in meters per second.

Answer 1

Since it takes exactly 2 minutes and 52 seconds to travel that distance ,your average speed is 29.07 m/s

What is average speed?

Average speed is the total distance travelled/time taken for the distance.

What is your average speed?

Given that Freeways in Australia have a maximum speed of 100kph (27.78m/s) and an average speed camera measured the time over the course of 5km and found that it took me exactly 2 minutes and 52 seconds to travel that distance,

• the total distance travelled is 5 km = 5000 m and
• the total time = 2 min 52 s = 2 × 60 s + 52 s = 120 s + 52 s = 172 s

Since the average speed = total distance/total time, substituting the values of the variables into the equationm we have

average speed = total distance/total time

average speed = 5000 m/172 s

= 29.07 m/s

So, your average speed is 29.07 m/s

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