Compare the motion of three motorboats. Which motorboat was moving at the lowest speed?
a motorboat that moved 340kilometers north in 5hours a motorboat that moved 115kilometers east in 5hours a motorboat that moved 280kilometers north 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 objects moving for the same amount of time. The object that is moving the slowest will go the shortest distance in that time. It is moving at the lowest speed.
Look at the distance each motorboat moved and the time it took to move that distance. The direction each motorboat moved does not affect its speed.
Notice that each motorboat moved for 5 hours. The motorboat that moved 115 kilometers moved the shortest distance in that time. So, that motorboat must have moved at the lowest speed.