# Rolling toy

**This task is about elastic energy.**

The students in Ms Wrigley's class made a roller toy like the one in the picture above. Phillipa wound the rod of her toy around so that the rubber band twisted. She then let the toy move across the floor until it stopped. She did this six times, winding the rod a different number of turns each time. Phillipa made this table of results for her roller toy.

No. of complete turns of the rod | 2 | 4 | 6 | 8 | 10 | 12 |

Distance travelled (cm) | 4 | 8 | 12 | 16 | 20 | ? |