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3 years ago

If a river current is 8.0 m/s, and a boat is traveling 10.0 m/s upstream, what is the boat’s speed relative to the riverbank?

Physics

2 answers:

Feliz [49]3 years ago

5 0

Answer:

The relative speed of the boat is found to be - 2 m/s or 2 m/s in opposite direction to the river current.

Explanation:

Let us, consider the direction of river as the reference of positive direction. Hence,

Speed of River = Vr = 8 m/s

Since, the boat is traveling upstream. The upstream direction means that the boat is traveling in the opposite direction of the river current. Therefore, its direction will be negative. Hence,

Speed of boat = Vb = - 10 m/s

Now, the relative speed will be the vector sum of both speeds, with relative directions:

Relative Speed = V = Vr + Vb

V = 8 m/s - 10 m/s

This shows that the magnitude of speed of boat is 2 m/s and its direction will be opposite to that of river current.

Norma-Jean [14]3 years ago

3 0

If the boat is i travling at 10 m/s and the river is 8.0 m/s the boats speed is 18.0 m/s

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Answer:

Explanation:

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antiseptic1488 [7]

Answer:

D) 11 m/s

Explanation:

The problem asks us to calculate the velocity of the hot dog with respect to the observer stationary outside the train. This velocity is given by:

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where

$v_t=+10 m/s$ is the velocity of the train (towards right)

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Substituting the numbers into the equation, we find

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3 years ago

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<h2>Answer:</h2>

<u>Ball A has more kinetic energy</u>

<h2>Explanation:</h2>

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Answer:

Please find the answer in the explanation

Explanation:

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