Compare the motion of two ducks. Which duck was moving at a lower speed?
a duck that moved 755kilometers in 10hours a duck that moved 970kilometers in 10hours
An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects moving for the same amount of time. The object that is moving slower will go a shorter distance in that time. It is moving at a lower speed.
Look at the distance each duck moved and the time it took to move that distance.
One duck moved 755 kilometers in 10 hours.
The other duck moved 970 kilometers in 10 hours.
Notice that each duck spent the same amount of time moving. The duck that moved 755 kilometers moved a shorter distance in that time. So, that duck must have moved at a lower speed.