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3 years ago

12

Am I right? If not please explain why and give the correct answer. Please I really need help y’all:-(

1 answer:

SCORPION-xisa [38]3 years ago

6 0

You are given two velocities. The equation you have chosen has only 1 velocity. On top of that, B and D are the same equation. If you divide B by t you get D. So both are wrong.

you want d in some form, so the equation is either a or c. We don't know what the acceleration is -- only that it is constant. You should pick a which assumes a constant acceleration.

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3 years ago

Find the west component of 45 m 19º S of W

BaLLatris [955]

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The west component of the given vector is - 42.548 meters.

Explanation:

We need to translate the sentence into a vectoral expression in rectangular form, which is defined as:

$(x, y) = (r_{x}, r_{y})$

Where:

$r_{x}$ - Horizontal component of vector distance, measured in meters.

$r_{y}$ - Vertical component of vector distance, measured in meters.

Let suppose that east and north have positive signs, then we get the following expression:

$(x, y) = (-45\cdot \cos 19^{\circ}, -45\cdot \sin 19^{\circ})\,[m]$

$(x, y) = (-42.548,-14.651)\,[m]$

The west component corresponds to the first component of the ordered pair. That is to say:

$x = -42.548\,m$

The west component of the given vector is - 42.548 meters.

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4 years ago