Exam-style question
Try this first
When modeling projectile motion, what is assumed about the acceleration due to gravity?.
- A.It varies with height.
- B.It is constant near the Earth's surface.
- C.It is zero at the peak of the motion.
- D.It only acts horizontally.
Model answer
What a good answer should say
- It is constant near the Earth's surface.
Explanation
Why this works
In projectile motion models, it is assumed that the acceleration due to gravity is constant at approximately 9.81 m/s² near the Earth's surface, simplifying calculations of the projectile's vertical motion.
Common mistake
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