A river current has a velocity of 5 km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. How can the velocity of the boat relative to the shore be calculated?
a.by subtracting the river current vector from the boat’s velocity vector
b.by dividing the river current vector by the boat’s velocity vector
c.by multiplying the vectors
d.by adding the vectors

Answers

Answer 1

Answer:

D. By adding the vectors

[tex]V = 10km/h[/tex]

Explanation:

Given

Represent the velocity of the river current as VR

[tex]V_R = 5km/h[/tex]

Represent the velocity of the boat as VB

[tex]V_B = 5km/h[/tex]

Required

How to calculate the velocity of boat relative to river current

From the question, we understand that both move in the same direction.

So, the relative velocity V is calculated as:

[tex]V = V_R + V_B[/tex]

[tex]V = 5km/h + 5km/h[/tex]

[tex]V = 10km/h[/tex]

Notice that the both velocities are added together to get the relative velocities.

This is so because they both move in the same direction

From the list of given options, only option D is correct.


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How did Philip II maintain power over the Greek city-states?

He required soldiers to live in Greece.
He used bribery and threats to control Greece.
He developed alliances with local Greek leaders.
He respected the rights of those who lived in Greece.
PLZ hurry fast, im timed!!!

Answers

Answer:

bribery

Explanation:

How was Philip 11 able to gain control over

most of Greece? The Greek city-states

were weakened by the Peloponnesian

War and Philip was able to conquer some

city-states and bribed others. Some

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Philip II maintain power over the Greek city-states because he used bribery and threats to control Greece.

What did Philip II do?

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Philip II

Philip II, also known as Philip the Prudent, was King of Spain from 1556, King of Portugal from 1580, and King of Naples and Sicily from 1554 until his death in 1598.

Thus, Philip II maintain power over the Greek city-states because he used bribery and threats to control Greece.

Learb more on Philip II here - brainly.com/question/8630151

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