Question 22N.2.SL.TZ0.1c.ii
| Date | November 2022 | Marks available | [Maximum mark: 1] | Reference code | 22N.2.SL.TZ0.1c.ii |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Describe | Question number | c.ii | Adapted from | N/A |
A raindrop falls vertically from rest.
The graph shows how the speed of the raindrop varies with time t.
During the first 3.0 s of motion, the raindrop falls a distance of 21 m and reaches a speed of 9.0 m s−1. The mass of the raindrop is 34 mg. The temperature of the raindrop does not change.
Describe the energy change that takes place for t > 3.0 s.
[1]
«gravitational» potential energy «of the raindrop» into thermal/internal energy «of the air» ✓
Accept heat for thermal energy.
Accept into kinetic energy of air particles.
Ignore sound energy.
Of the wrong answers, the most common ones were gravitational potential to kinetic or the idea that because there was no change in velocity there was no energy transfer. A significant number, though, scored by identifying the change into thermal (most of them), kinetic of air particles (a few answers) or internal (very few).
