Compare the motion of two bicycles. Which bicycle was moving at a lower speed?
a bicycle that moved 150miles in 5hours a bicycle that moved 55miles 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 bicycle moved and the time it took to move that distance.
One bicycle moved 55 miles in 5 hours.
The other bicycle moved 150 miles in 5 hours.
Notice that each bicycle spent the same amount of time moving. The bicycle that moved 55 miles moved a shorter distance in that time. So, that bicycle must have moved at a lower speed.