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4 years ago

Suppose two vectors have unequal magnitudes. can their sum be zero? explain

Physics

1 answer:

GalinKa [24]4 years ago

5 0

Answer;

- No, Two vectors of unequal magnitude can never sum to zero.

Explanation;

-Two vectors of equal magnitude that are pointing in opposite directions will sum to zero.

-Two vectors of unequal magnitude can never sum to zero. If they point along the same line, since their magnitudes are different, the sum will not be zero.

- If they point in different directions, then you can always decompose one vector into two components: one along the other vector and one perpendicular to the other vector. In this case, the perpendicular component can never be eliminated.

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4 years ago

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A cyclist is riding along at a constant velocity of 15 m/s. He then accelerates at a uniform rate of 0.50 m/s over a distance of

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The cyclist accelerates for 4 seconds.

Explanation:

The motion of the cyclist is a motion at constant acceleration, so we can use suvat equations:

$s=ut+\frac{1}{2}at^2$

where

s = 64 m is the distance covered

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Substituting into the equation,

$64=15t+\frac{1}{2}(0.50)t^2\\0.25t^2+15t-64=0$

Solving the equation for t,

$t=\frac{-15\pm \sqrt{(15)^2-4(0.25)(-64)}}{2(0.25)}$

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which is the answer we were looking for.

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3 years ago

Did Lydia make an all-or-nothing or a marginal decision while spending her money? Justify your response.

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Answer:

Lydia made a marginal decision because she is trying to save for her collage by spending less, she will have some money left over after paying for her necessary to go to her college tuition.

Explanation:

She saved part of it for her college tuition and spent the remainder for the prom dress, car insurance, and birthday gift.

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3 years ago

Suppose you are watching a science fiction movie and one of the scenes involves a spaceship battle in outer space. spaceship a l

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B) Idk what do u mean with "<span>the scene is presented from the perspective of spaceship"</span>

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3 years ago

Which describes why the wind blows faster as it passes between tall buildings in a city? A. Air speed increases because the buil

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C.Air pressure is lower between the buildings

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