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denis-greek [22]
3 years ago
10

A vector is parallel to the y axis, what is it x component?​

Physics
1 answer:
slavikrds [6]3 years ago
4 0

Answer:

Explanation:

A vector is parallel to the y axis .

Let its magnitude be A . So the vector can be represented as A j .

where i and j are unit vectors in x and y axis direction .

The x component of A j will be dot product of A j with i

The x component of A j = A j . i

= A x 0      [  Since j . i = 0 ]

= 0

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A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. its speed is 40 m/s when i
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Given that,

Initial velocity , Vi = 0

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Distance can be calculated as,

2as = Vf² - Vi²

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s = 81.55 m

For half height, that is, s = 40.77m

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Vf = 28.28 m/s

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3 years ago
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Axial Tilt and Sun Energy

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3 years ago
A race car has a maximum speed of 0.104 km/s .What is this speed in miles per hour ?
sweet [91]

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8 0
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