Answer:
From the graph, the speed of the snail in the first 20 seconds is
1 centimeter/second.
After that, the snail remains in the same place for 50 seconds.
Step-by-step explanation:
As we know
Speed= distance covered / unit time
So putting the values in the above equation we get
Speed= 20 cm/20 sec
Speed= 1 cm/s ec
After that the snail remained still for 50 cm because the line is straight from 20 seconds to 70 seconds as the distance is not changing as shown in the graph so 70 sec -50 sec= 20 sec