Math, asked by ha4354145, 1 month ago

in 100m race a defeat b by 5s with speed of 20 km\h then what is the speed of b​

Answers

Answered by pkpatle7
0

Step-by-step explanation:

We can clearly conclude the following:

When A completes 100m, B is at 80m which is 20m behind.

Now A beats B by 4 secs. This means B takes 4 more seconds to complete the race

As B is 20m behind when A completes the race, so B takes 4 secs to complete 20m

SB = 5m/s

Total time of B = 100/5 = 20 secs

Time of A = 20 - 4 = 16 seconds

Thus, SA = 100/16 = 6.25m/s (Answer

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