| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Determine the acceleration of the rolling body.
Tip: Show the motion of the body in the $(t^2{,}s)$ -coordinate system and fit a straight line to the points. What can be deduced from the slope?
Answer: $0{,}49\ \frac{m}{s^2}$