Question

it is necessary to have any motion in the direction of acceleration


explain ​

Answer 1

Question:

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It is necessary to have any motion in the direction of acceleration?

Answer:

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Since velocity is a vector, it can change either in magnitude or in direction.

It is sure that although acceleration is in the direction of the change in velocity, it is not always in the direction of motion.

When an object slows down, its acceleration is opposite to the direction of its motion.

Answer 2

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Compared to displacement and velocity, acceleration is like the angry, fire-breathing dragon of motion variables. It can be violent; some people are scared of it; and if it's big, it forces you to take notice. That feeling you get when you're sitting in a plane during take-off, or slamming on the brakes in a car, or turning a corner at a high speed in a go kart are all situations where you are accelerating.

Acceleration is the name we give to any process where the velocity changes. Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both.