Compare the motion of two birds. Which bird was moving at a lower speed?
a bird that moved 15miles in 5hours a bird that moved 5miles in 5hours
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 mile.
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 bird moved and the time it took to move that distance.
One bird moved 5 miles in 5 hours.
The other bird moved 15 miles in 5 hours.
Notice that each bird spent the same amount of time moving. The bird that moved 5 miles moved a shorter distance in that time. So, that bird must have moved at a lower speed.