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Motion in a Plane Quiz

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Questions and Answers

What physical quantities are needed to describe the motion of an object along a straight line?

Temperature, pressure, humidity, and speed
Force, work, energy, and power
Position, displacement, velocity, and acceleration (correct)
Mass, volume, density, and speed

How many dimensions are possible in one dimension?

Unlimited directions
Two directions (correct)
Three directions
Four directions

In how many dimensions do we need to use vectors to describe the motion of an object?

One dimension only
Unlimited dimensions
Four dimensions
Two dimensions (a plane) or three dimensions (space) (correct)

What is necessary to learn in order to describe motion in two dimensions or three dimensions?

<p>The language of vectors (D)</p> Signup and view all the answers

What is needed to take care of the directional aspect of physical quantities in one dimension?

<ul> <li>and – signs (A)</li> </ul> Signup and view all the answers

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Study Notes

Describing Motion

To describe the motion of an object along a straight line, three physical quantities are necessary: position, velocity, and acceleration.

Dimensions and Vectors

One dimension has only one possible dimension.
Vectors are needed to describe the motion of an object in two or three dimensions.

Motion in Multiple Dimensions

To describe motion in two or three dimensions, it is necessary to learn vector algebra and how to resolve vectors into components.

Directional Aspect in One Dimension

To take care of the directional aspect of physical quantities in one dimension, a positive or negative sign is used to indicate the direction of the quantity.

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