You surely know washing machines with two buttons for two different washing temperatures. If you press one button all the following loads are washed with one temperature. If you press the other button the loads are washed with the other temperature. The logic behind it is exactly that of an RS latch!
Also in other everyday situations flip-flops are used. Think of a traffic light control or elevator control. And finally, flip-flops are used in modern computers in great numbers.
In the subsequent experiments, you will learn about the two most important applications of flip-flops: the counter and shift register.