VS
Scalars, Vectors & Newton’s Laws of Motion (WAEC Mechanics) ⚡
SSS 1 - 3Vector Algebra and Particle Dynamics•Module 1 • Lesson 1•Est. 25 mins
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Section 1 of 3
Scalars vs Vectors in Physical Systems
### Defining Physical Quantities:
* **Scalar Quantities**: Possess **magnitude (size) only**, with no direction.
* *Examples*: Mass ($5\text{ kg}$), Time ($12\text{ s}$), Temperature ($300\text{ K}$), Speed ($20\text{ m/s}$), Work ($50\text{ J}$).
* **Vector Quantities**: Possess **both magnitude and direction** and obey the parallelogram law of addition.
* *Examples*: Displacement ($10\text{ m due East}$), Velocity ($25\text{ m/s North}$), Acceleration, Force, Momentum.
Core Takeaway: Displacement, velocity, acceleration, and force are vectors. Speed, mass, and energy are scalars.
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Teacher Emeka•12:25 PM
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