Introduction
Good day, students!
My name is Siri, and welcome to today’s physics class. Get your writing materials and calculators ready, because we’ll be tackling important physics past questions that are likely to appear in exams like WAEC, NECO, and JAMB.
This session focuses on derived units, motion graphs, and pressure concepts — foundational topics you must understand for excellent performance.
Let’s get started with the questions and answers.
Question 1: Derived Units
Question:
Which of the following physical quantities are derived?
- Area
- Thrust
- Pressure
- Mass
Explanation
- Area is derived from length × breadth (m²).
- Thrust (force) is derived from mass × acceleration (N).
- Pressure is derived from force ÷ area (N/m²).
- Mass is a fundamental quantity, not derived.
Therefore, the correct answer is the group excluding mass.
Question 2: Slope of a Displacement-Time Graph
Question:
The slope of a straight-line displacement-time graph indicates ______.

Watch more educational videos and past questions: https://youtube.com/@allcbts
Conclusion
Understanding derived units, motion graphs, and pressure concepts is essential for excelling in physics exams. Practice these concepts frequently, as they appear repeatedly in past WAEC, NECO, and JAMB papers.
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