Compare the motion of two bats. Which bat was moving at a lower speed?
A: a bat that moved 140miles in 10hours
B: a bat that moved 55miles in 10hours
Look at the distance each bat moved and the time it took to move that distance.
One bat moved 55 miles in 10 hours.
The other bat moved 140 miles in 10 hours.
Notice that each bat spent the same amount of time moving. The bat that moved 55 miles moved a shorter distance in that time. So, that bat must have moved at a lower speed.