Concept explainers
a.
Speed of the men who make Olympic record in m/s
a.
Answer to Problem 14MCQ
Speed of the men in m/s is 2.828 m/s.
Explanation of Solution
Given:
Distance covered by men is,
Time taken to cover the distance is,
Speed is given by ratio of distance covered and time taken to cover the distance.
Therefore,
Where, s is speed, d is distance and t is time.
Now, substituting the value of d and t and solve.
Therefore, speed of the men in m/s is 2.828 m/s.
b.
Distance swum by men at the rate of 2.822 m/s in meter.
b.
Answer to Problem 14MCQ
Distance swum by men is 136.92 m
Explanation of Solution
Given:
Time is given,
From part (a) speed of the men is
Distance covered is given by,
Where, d is distance, s is speed and t Is time.
Now, substituting the value of s and t and solve.
Therefore, distance swum by men is 136.92 m
Chapter 6 Solutions
Pre-Algebra, Student Edition
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