DP Physics (last assessment 2024)
Question 19M.3.SL.TZ2.b
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ2.b |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Label | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19M.3.SL.TZ2.b
A spaceship moves away from the Earth in the direction of a nearby planet. An observer on the Earth determines the planet is 4 ly from the Earth. The spacetime diagram for the Earth’s reference frame shows the worldline of the spaceship. Assume the clock on the Earth, the clock on the planet, and the clock on the spaceship were all synchronized when ct = 0.
Label, with the letter E, the event of the spaceship going past the planet.
[1]
Markscheme
E labelled at = 4, ct = 5 ✔
Check that E is placed on the worldline of S.
Examiners report
Event E was usually correctly labelled on the space-time diagram.
