Compare the motion of three geese. Which goose was moving at the lowest speed?
a goose that moved 575kilometers south in 10hours a goose that moved 920kilometers north in 10hours a goose that moved 1,230kilometers south 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 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 goose moved and the time it took to move that distance. The direction each goose moved does not affect its speed.
Notice that each goose moved for 10 hours. The goose that moved 575 kilometers moved the shortest distance in that time. So, that goose must have moved at the lowest speed.