Compare the motion of two ships. Which ship was moving at a higher speed?
a ship that moved 185miles in 5hours a ship that moved 85miles 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 faster will go a farther distance in that time. It is moving at a higher speed.
Look at the distance each ship moved and the time it took to move that distance.
One ship moved 185 miles in 5 hours.
The other ship moved 85 miles in 5 hours.
Notice that each ship spent the same amount of time moving. The ship that moved 185 miles moved a farther distance in that time. So, that ship must have moved at a higher speed.