| Date | November 2013 | Marks available | 1 | Reference code | 13N.1.SL.TZ0.12 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 12 | Adapted from | N/A |
Question
For a body undergoing simple harmonic motion the velocity and acceleration are
A. always in the same direction.
B. always in opposite directions.
C. in the same direction for a quarter of the period.
D. in the same direction for half the period.
Markscheme
D
Examiners report
Many candidates opted for B and this may be down to not taking the time to read the question carefully. Typically, questions on simple harmonic motion ask for the relationship between acceleration and displacement, but in this case, the question asks for the relationship between acceleration and velocity. Candidates will benefit from checking that the other options are wrong before quickly deciding upon their initial thoughts.
