Question

A plane needs 12 seconds to travel 1,030m. How fast is it travelling in km/h?

Answer 1

speed ={1030 /12}×18/5=206×3/2=309km/h

Answer 2

It will travel 5150m per minute as 60 seconds in a minute.12×5=60

therefore 1030m×5=60

There are 60 minutes in an hour.

So you can calculate this by multiplied it by 60.

5150m×60=309000m

So the plane will travel 309000m per hour.

now you can convert this into km/h.

309 km/h as 1 m/h is equal to 0.001km/h.

309000×0.001=309

So it will travel at 309km/h.

Hope you like my answer.