Try it

Speed10m/s

Understand the result

What's going on

Speed is just a way of answering “how far, in how long?” in a single number. Cover more ground in the same time, or the same ground in less time, and speed goes up either way.

The formula

speed = distance / time

Show the derivation, mnemonic, and worked example

Build it up

If something covers 100 meters in 10 seconds, it’s covering 10 meters every second - divide the distance by the time and you get the rate. Run that backward and distance is just speed multiplied by however long you kept it up; time is distance split into speed-sized chunks.

Worked example

Worked example

Distance = 100 m, Time = 10 s

Speed = 100 ÷ 10

Speed = 10 m/s