cross es If a person swism 100 metres in the first 40 seconds, crosses 80 meters in the next 40 seconds and 45 meters in the lost 20 seconds Find the average speed .

cross es If a person swism 100 metres in the first 40 seconds, crosses

1.	cross es If a person swism 100 metres in the first 40 seconds, crosses 80 meters in the next 40 seconds and 45 meters in the lost 20 seconds Find the average speed .
Answer» ) A person swims 100 m in the FIRST 40 s, 80 m in the next 40 s and 45 m in the last 20 s. What is the AVERAGE speed? *(Ans: 2.25 m/s²)