Question

Before the invention of big trucks, people used local rivers as aquatic railroads. If a river can transport a wood log 1161 m in 9 min, what is the average speed of the river?

(If needed, round to the nearest thousandths and remember to include the correct unit.)

Answer 1

Average speed = 129 m/min

Step-by-step explanation:

The length of the wood log = 1161 metres

Time = 9 minutes

Speed =
`(distance)/(Time)`

So Speed =
`\frac{1161}\frac{9}`

= 129 metres/minute

Therefore the average speed = 129 m/min