1. Velocity and Acceleration
Velocity is a vector quantity that represents the rate of change of displacement, while acceleration indicates the rate of change of velocity over time. Understanding these concepts and their relationships is essential for analyzing motion in various practical applications, such as transportation and sports. The chapter also highlights the equations of motion and graphical representations that aid in visualizing and calculating displacement and acceleration.
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What we have learnt
- Velocity is defined as the rate of change of displacement with respect to time and is a vector quantity.
- Acceleration is the rate of change of velocity over time, also a vector quantity, which indicates whether an object is speeding up or slowing down.
- Uniform motion involves constant velocity while non-uniform motion includes changes in velocity.
- Graphs are useful tools to represent velocity and acceleration over time, aiding in understanding motion.
Key Concepts
- -- Velocity
- A vector quantity that measures the rate of change of displacement with respect to time, encompassing both speed and direction.
- -- Acceleration
- A vector quantity representing the rate at which velocity changes over time.
- -- Uniform Motion
- Motion where an object moves at a constant velocity, implying zero acceleration.
- -- Nonuniform Motion
- Motion where an object's velocity changes continuously, indicating varying acceleration.
- -- Equations of Motion
- Mathematical relationships that describe the motion of an object under uniform acceleration.
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