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. Show your working one step at a time.
Model answer
What a good answer should say
- The final answer is 14 m s^-1.
- Use SUVAT because acceleration is constant.
- Choose v = u + at.
- Set u = 4.
This answer is tied to the objective: Q2 Understand, use and interpret graphs in kinematics for motion in a straight line, including displacement against time with gradient interpretation and velocity against time with gradient and area interpretation..
Explanation
Why this works
Use the explanation to connect the worked answer back to Q2 Understand, use and interpret graphs in kinematics for motion in a straight line, including displacement against time with gradient interpretation and velocity against time with gradient and area interpretation..
exam warm-up keeps the canonical answer 14 m s^-1 fixed before the model answer is written, so the worked solution and final answer agree.
Maths method check
- Topic focus: Mechanics.
- Question style: exam_style.
- Reasoning demand: recall.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
No common mistake is linked to this question yet.