Exam-style question
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A ball is thrown vertically upwards with an initial velocity of 15 m/s. Calculate the maximum height it reaches before falling back down. Assume acceleration due to gravity is -9.81 m/s².
Model answer
What a good answer should say
- The maximum height reached by the ball is 11.5 m.
Explanation
Why this works
This question assesses the application of uniform acceleration equations in a vertical motion context. The formula used is v² = u² + 2as, where the final velocity at the maximum height is 0.
The substitution and working demonstrate how to find the height.
Common mistake
No common mistake is linked to this question yet.