Question

A boat is traveling east across a river that is 112 meters wide at 8 meters per second. If the river has a northward current of 5 meters per second, what is the resultant speed of the motorboat rounded to the nearest tenth? A.3.0 m/s B.9.4 m/s C. 13.0 m/s D. 8.6 m/s

Answer 1

This is the concept of application of the Pythagorean theorem. The resultant speed of the motorboat which is crossing the river that has a northward current of 5 m/s at a speed of 8 m/s will be given by:
c^2=a^2+b^2
c^2=8^2+5^2
c^2=64+25
c^2=89
c=sqrt89
c=9.4 m/s

Answer 2

Answer:

The answer would be 9.4m/s I can't provide the explanation sorry.