Units

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What are SI units?

SI units are the international system of units used for measurement. They consist of fundamental units and derived units.

What is dimensional analysis and how is it applied?

Dimensional analysis is a method used to check the consistency of physical equations and to derive relationships between physical quantities. It involves analyzing the dimensions (such as length, time, mass) of different terms in an equation to ensure they are consistent.

What are the elementary concepts of differentiation and integration used for in describing motion?

Differentiation and integration are used to describe the rate of change of motion. Differentiation helps to calculate instantaneous velocity, while integration helps to calculate displacement and total distance traveled.

What are scalar and vector quantities?

<p>Scalar quantities only have magnitude (such as distance or temperature), while vector quantities have both magnitude and direction (such as displacement or velocity).</p> Signup and view all the answers

What is the scalar product of vectors?

<p>The scalar product (or dot product) of two vectors is a scalar quantity equal to the product of their magnitudes and the cosine of the angle between them. It is used to calculate work, energy, and projections.</p> Signup and view all the answers