Class 9 PTB physics CHP 2 kinamatic scalar and vector

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Here's a description of kinematic, dynamic, scalar, and vector:

Kinematic:
Kinematic refers to the study of motion without considering the forces that cause it. It deals with the description of motion, including parameters like displacement, velocity, and acceleration.

Dynamic:
Dynamic refers to the study of motion under the influence of forces. It examines the relationship between forces and motion, including the effects of forces on objects.

Scalar:
A scalar is a physical quantity that has only magnitude (amount or size) but no direction. Examples include:

Temperature
Mass
Speed
Energy

Vector:
A vector is a physical quantity that has both magnitude (amount or size) and direction. Examples include:

Displacement
Velocity
Acceleration
Force

Key differences between scalars and vectors:

Scalars can be added or subtracted algebraically, while vectors require geometric or trigonometric operations.
Scalars do not have direction, while vectors have both magnitude and direction.

Understanding these concepts is crucial in physics, engineering, and other fields where motion and forces are involved.
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