A motor boat is racing toward north at 35 km/h and the water current in the region is 7 km/h in the direction of 30 degrees east of south. find the resultant velocity of the boat.
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Explanation:
Answer:
The resultant velocity of the boat is 21.8 km/h.
Explanation:
Given that,
Speed of motorboat = 25 km/h
Speed of water current = 10 km/h
Angle = 60°
According to the figure,
The two velocities 25 km/h and 10 km/h are at angle 120°.
The magnitude of their resultant is,
R = √A²+ B² + 2AB cos 0
= √252 +102 + 2 × 25 x 10 cos 120° R =
R= 252 +102 + 2 x 25 x 10 × (
R = 21.8 km/h
Hence, The resultant velocity of the boat is 21.8 km/h.
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