- Messages
- 24
- Reaction score
- 24
- Points
- 13
at the stationary point, there is no movement of particle, you can see that from any marking scheme or book you want! and the direction of the movement of particle after the crest is upward and before the crest is downwards! i have checked it and confirmed it! therefore i think that CIE will grant marks to both upward or downward arrow marked!
I myself have run into this question 2 times, apart from my notes in physics from which i remember. But I guess we will have to wait for the mark schemes to see for sure