Compare the motion of two speed walkers. Which speed walker was moving at a lower speed?
a speed walker who moved 40kilometers in 5hours a speed walker who moved 45kilometers 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 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 speed walker moved and the time it took to move that distance.
One speed walker moved 40 kilometers in 5 hours.
The other speed walker moved 45 kilometers in 5 hours.
Notice that each speed walker spent the same amount of time moving. The speed walker who moved 40 kilometers moved a shorter distance in that time. So, that speed walker must have moved at a lower speed.