Question

A motorcycle is moving at a constant speed of 45km/h how long does it take the motorcycle to travel a distance of 20km?

Answer 1

It takes 1600 seconds or
`(4)/(9)` hours to travel a distance of 20 km.

Step-by-step explanation:

Given:

Speed of the motorcycle,
`v=45\textrm{ km/h}`

Distance traveled by the motorcycle,
`D=20\textrm{ km}`

We know that,

`Distance = (Speed)/(Time)`

∴
`Time =(Distance)/(Speed)=(D)/(v)`

Plug in 20 km for
`D` and 45 km/h for
`v`. Solve for time.

⇒ Time =
`(20)/(45)=(4)/(9)\textrm{ h}=(4)/(9)* 3600=1600\textrm{ s}`

Therefore, the time taken to travel a distance of 20 km is 1600 seconds or
`(4)/(9)` hours.