What angle will the boat need to head upstream with if it is to travel directly across the river?
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What angle will the boat need to head upstream with if it is to travel directly across the river?
At what angle must the boat be pointed upstream to travel straight across the river? In other words, in what direction is the velocity of the boat relative to the water? The answer is 27 degrees upstream.
What is the resultant velocity of the boat?
The resultant velocity is simply the vector sum of these two velocities. The first step to answering this question involves sketching a vector addition diagram in which you add the boat velocity and the river velocity head-to-tail.
How do you calculate the velocity of the boat relative to the shore?
Figure 3.18 The velocity of the boat relative to the shore is vBS. It is the vector sum of the velocity vBW of the boat relative to the water and the velocity vWS of the water relative to the shore:vBS = vBW+vWS. The velocity of the boat relative to the shore is vBS.
What is the speed of the boat in still water it takes 2 hours?
2. What is the speed of the boat in still water? I. It takes 2 hours to cover the distance between A and B downstream….II.
| Speed of the boat = | 1 | (8 + 12) km/hr = 10 km/hr. |
|---|---|---|
| 2 |
What does still water mean in physics?
noun. a part of a stream that is level or where the level of inclination is so slight that no current is visible.
What is upstream and downstream in physics?
One of the types is when the boat goes in the same direction as the direction of the river. This is what we know as the downstream motion. However, when the boat goes in the opposite direction as that of the stream or the river, it is what we call the upstream motion. In other words, the upstream motion is slower.
What is speed relative to water?
The speed of a boat relative to the water is equal to the speed of boat in still water. The velocity of a boat relative to the water (→vb/w v → b / w ) is equal to the difference in velocity of the boat relative to the ground (→vb v → b ) and velocity of water relative to the ground (→vw v → w ) i.e., →vb/w=→vb−→vw.
What does speed in still water mean?
Still Water: If the speed of the water is zero, i.e. water is stationary, then it is called still water. When the speed of a boat or a swimmer is given, it usually means speed in still water.