Answer:
D) 9.4 m/s
Step-by-step explanation:
The boat has an eastward speed of 8 m/s and a northward speed of 5 m/s. The resultant speed can be found with Pythagorean theorem:
v² = (8 m/s)² + (5 m/s)²
v = 9.4 m/s
Answer:
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
