Concept explainers
The rower who reaches the opposite side first.
Solution:
The rower who heads upstream at an angle.
Explanation:
Given:
Rower 1 heads straight but is pulled downstream by the current.
Rower 2 heads upstream at an angle and reaches the exactly at the opposite end of the starting point.
Calculation
Case 1: When rower heads straight but is pulled downstream by the current.
Let the distance between the opposite sides be: d
Then time taken by rower 1 to cross the river is:
Case 2: When rower heads upstream at an angleand reaches the exactly at the opposite end of the starting point.
The distance between the opposite sides isd .
Then time taken by rower 2 to cross the river is:
Conclusion:
Hence, the rower heads who upstream at an angle and reaches the exactly at the opposite end of the starting point will reach before the rower who heads straight but is pulled downstream by the current.
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Physics: Principles with Applications
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