Compare the motion of two speedboats. Which speedboat was moving at a lower speed?
a speedboat that moved 460miles in 10hours a speedboat that moved 555miles 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 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 speedboat moved and the time it took to move that distance.
One speedboat moved 460 miles in 10 hours.
The other speedboat moved 555 miles in 10 hours.
Notice that each speedboat spent the same amount of time moving. The speedboat that moved 460 miles moved a shorter distance in that time. So, that speedboat must have moved at a lower speed.