A boat travels due east at a speed 40ms\(^{-1}\)s across a river flow due south at 30ms\(^{-1}\)s. What is the resultant speed of the boat?
a
1.3ms-1
b
10.0ms-1
c
50.0ms-1
d
70.0ms-1
Explanation
Correct Option
c
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Feranmi047
4 years ago
That's correct. Just use pythagoras' theorem, in as much as the resultant speed functions as hypothenus, and the other two sides are given.
