A boat cruises 60 meters west in 10 seconds. What is its instantaneous velocity?

Physics

2 answers:

Leya [2.2K]3 years ago

4 0

Answer:

A. 6 m/s

Explanation:

Instantaneous velocity is calculated by finding the velocity at that particular instant....this is done by dividing the distance by the Time taken...

Velocity = distance/time

Velocity = 60/10

Velocity= 6

Velocity = 6m/s

kari74 [83]3 years ago

3 0

A - 6 meters a second ( 6m/s)

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icang [17]

Answer:

Explanation: Ok, first caracterize the two vectors that we know.

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where i and j refers to the versors associated to te x axis and the y axis respectively.

in a sum of vectors, we must decompose in components, so: ax + bx = cx and ay + by = cy. From this two equations we can obtain B.

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Now with te value of both components of B, we proceed to see his magnitude an angle relative to +x.

Lets call a to the angle between -x and B, from trigonometry we know that tg(a) = by/bx, that means a = arctg(12.843/23.288) = 28.8°

So the total angle will be 180° + 28.8° = 208.8°.

For the magnitude of B, lets call it B', we can use the angle that we just obtained.

bx = B'*cos(208.8°) so B' = (-23.288 m)/cos(208.8°) = 26.58 m.

So the magnitude of B is 26.58 m.

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Anika [276]

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