Question

A person swims 100 m in first 40s, 80m in next 40s and ujm in last 20s. What is the average speed

Answer 1

Answer:

Explanation:

d1 = 100m

t1= 40s

d2 = 80m

t2 = 40s

d3=45

t3=20s

total distance= 100+80+45

                        =225

total time= 45+45+20

                 =110

average speed =total distance / total time

                          =225/110

                           =2.4545......................

                        or =22.5/11

Answer 2

Given: d= 100+80+45

= 225m

t= 40+40+20

= 100s

To find: Average speed?

Solñ:

Average speed= Total distance travelled/ Time required.

= 225/100

= 2.25m/s

Ans: The person swims with an average of 2.25 m/s.