Good day viewers!
Welcome to today’s Physics class here on AllCBTs, where we’ll be working through actual NECO Physics past questions. These are topics you cannot afford to skip, especially if you want to score an A1.
Let’s jump right into it.
You can watch the full class in the video below:
Question 1: Which of the Following Is a Scalar Quantity?
A scalar quantity is one that has only magnitude but no direction.
Let’s examine the options:
- Velocity – Vector (has both magnitude and direction)
- Acceleration – Vector
- Force – Vector
- Mass – Scalar
Final Answer: Mass
Question 2: What Is the Unit of Force?
This question is based on Newton’s Second Law of Motion, which states: F=m×aF = m \times aF=m×a
Where:
- FFF = Force
- mmm = Mass
- aaa = Acceleration
So, the unit of force is: kg×m/s2=Newton (N)\text{kg} \times \text{m/s}^2 = \text{Newton (N)}kg×m/s2=Newton (N)
Final Answer: Newton (Option B)
Question 3: Calculating Acceleration of a Moving Car
Problem:
A car accelerates from rest to 20 m/s in 5 seconds. What is its acceleration?
Given:
- Initial velocity (uuu) = 0 m/s
- Final velocity (vvv) = 20 m/s
- Time (ttt) = 5 s
We use the formula: a=v−uta = \frac{v – u}{t}a=tv−u =20−05=205=4 m/s2= \frac{20 – 0}{5} = \frac{20}{5} = 4 \text{ m/s}^2=520−0=520=4 m/s2
Final Answer: 4 m/s²
Why These Questions Matter
These are high-frequency questions in GCE Physics Paper 1 and 2. You must master:
- Differences between scalar and vector quantities
- Applying Newton’s Laws of Motion
- Using acceleration formulas correctly
Watch more educational videos and past questions: https://youtube.com/@allcbts
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Get ready for NECO Physics 2025 with this solved past question set featuring scalars, Newton’s laws, and car acceleration. Ideal for Paper 1 prep.
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