DP Physics (first assessment 2025)
Question 19M.1A.SL.TZ1.5
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.SL.TZ1.5 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 5 | Adapted from | N/A |
5.
[Maximum mark: 1]
19M.1A.SL.TZ1.5
A ball is thrown upwards at an angle to the horizontal. Air resistance is negligible. Which statement about the motion of the ball is correct?
A. The acceleration of the ball changes during its flight.
B. The velocity of the ball changes during its flight.
C. The acceleration of the ball is zero at the highest point.
D. The velocity of the ball is zero at the highest point.
[1]
Markscheme
B
Examiners report
Candidate responses were divided between responses B (correct), D, and to a lesser extent, C. Many candidates appeared to focus on vertical velocity only or confused vertical velocity and acceleration values. This question had the highest discrimination index, suggesting that it would be a useful question for class discussion.
