Exam-style question
Try this first
A particle has u = 4 m s^-1, a = 2 m s^-2 and t = 5 s. Find v.
- A.14 m s^-1
- B.15
- C.13
- D.28
Model answer
What a good answer should say
- The correct answer is 14 m s^-1.
This answer is tied to the objective: Q3 Understand, use and derive the formulae for constant acceleration for motion in a straight line and extend to two dimensions using vectors..
Explanation
Why this works
Use the explanation to connect the worked answer back to Q3 Understand, use and derive the formulae for constant acceleration for motion in a straight line and extend to two dimensions using vectors..
The locked answer is 14 m s^-1. Work through the given values, keep one operation per line, and check the final step reaches 14 m s^-1.
Maths method check
- Topic focus: Mechanics.
- Question style: practice.
- Reasoning demand: recall.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
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