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Arisa [49]
3 years ago
5

Which of the following is an accurate statement about vectors?

Physics
2 answers:
MissTica3 years ago
5 0
<h3><u>Answer;</u></h3>

The magnitude of a vector may be positive even if all of its components are negative.

<h3><u>Explanation</u>;</h3>
  • Two vectors are equal if they have the same magnitude and the same direction. If two vectors have the same magnitude (size) and the same direction, then we call them equal to each other.
  • A negative vector is a vector that has the opposite direction to the reference positive direction.
  • When vectors are added, we take into account both their magnitudes and directions.
4vir4ik [10]3 years ago
5 0

<u>Answer:</u><u> </u>The magnitude of a vector may be positive even if all of its components are negative.

<u>Explanation:</u>

A vector has both magnitude and direction unlike a scalar which has magnitude only.

A vector can be written in terms of its components:

\vec{a} = a_x\hat{i}+a_y\hat{j}+a_z\hat{k}

The magnitude of the vector is given by:

|a| =\sqrt{a_x^2+a_y^2+a_z^2}

Thus, even if all the components of the vector are negative, the vector can have a positive magnitude.

The magnitude would be non-zero if one of its components is non-zero.

some of two vectors involves summation of magnitudes of of the vector components in the same direction. Two vectors having unequal magnitudes cannot have vector sum zero.

Rotating a vector about an axis passing through the tip of the vector changes the vector as the direction changes.

A scalar quantity cannot be added to a vector as it lacks the direction.

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Answer:

s_{f} = 14.312 m

Explanation:

Since the particle is experimenting a constant acceleration, the displacement can be found by using this formula:

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Since s_{o} = 0 m, the equation is simplified to this form:

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Then, the displacement is now isolated:

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Answer:

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Rapidez media es igual al cociente entre la distancia recorrida y el tiempo que se tarda en recorrer esa distancia.

En este caso la distancia recorrida es 400m, y el tiempo que se tarda es 30s, entonces la rapidez media va a ser:

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La velocidad media por otro lado, es igual al cociente entre el desplazamiento y el tiempo necesario para desplazarse.

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