Question

in 400 m relay race kanika covers 100 m in 2 minutes and 30 seconds ananya covers 100m in 3 minutes and 20 seconds sunitha in 2 minutes and pooja in 2 min 10seconds the average speed of all four participants is​

Answer 1

Answer:

0.675m/s

Explanation:

s = 400m

Kanika covers 100m in 2min 30s which is 150s

s

= 100m/150s

=2/3m /s

Ananya covers 100m in 3 min 20 sec which is 200s

s

= 100m/200s

=0.5m/s

Sunitha covers 100m in 2 mins which is 120s

s

= 100m/120s

= 0.83m/s

Pooja covers 100m in 2 min 10s wich is 130s

s

=100m/130s

=0.77m/s

Average speed = Sum of speeds / No of speeds

                          = (0.6 + 0.5 +0.83 +0.77) / 4

                          = 0.675m/s

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