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