To find the avarage speed you need to know 2 things.
The distance travelled and time taken.
To calculate the avarage speed you need to use this formula.
Avarage speed = DISTANCE TRAVELLED
Time taken
Distance = SPEED X TIME
Speed = Distance divided by time
The units of speed are M/S which means metres per second or you can also use KMH which means killiometres per hour.
Balanced and Unbalanced forces
If something is standing still, then a force is needed to start it moving. Then a force is needed to make it accelarate or deaccelarate. A force is also needed to make it change direction.
When 2 forces onj a object are equal to opposite we say they are balanced.
If the two forces are being balanced there is a resultant force and the object stays the same.
Levers
Levers are machines and are used to magnify forces. Levers always act though a pivot. The futher the effort force is from the pivot the the greater the force magnification, and the bigger the load force. So from levers what it all means is that it is something that magnises a force.
Fuels
There are three things to make a fire
oxegen heat and gas
If you took one of them away the gas would not work
EX: OIL RIG blockage
Which one should you
It does not matter you can stop any one in this case.