A Levels Physics (9702)•9702/11/M/J/20

Explanation
Acceleration from velocity change Steps:
- Read initial velocity as 0 m/s and final velocity as 22 m/s from the graph.
- Note the time interval as 3 s for the change.
- Apply formula: acceleration = (final velocity - initial velocity) / time = (22 - 0) / 3.
- Compute: 22 / 3 = 7.3 m/s². Why D is correct:
- It equals the average acceleration, defined as Δv / Δt. Why the others are wrong:
- A misapplies units, treating time as 0.1 s instead of 3 s.
- B divides by 0.38 s, ignoring the full interval.
- C uses Δv of 84 m/s, overestimating velocity change. Final answer: D
Topic: Equations of motion
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