| is perpetual motion possible | 0.63 | 0.2 | 1716 | 28 | 73 |
| is perpetual motion possible in space | 0.63 | 0.6 | 8278 | 37 | 56 |
| is perpetual motion possible in a vacuum | 0.68 | 0.1 | 9843 | 40 | 76 |
| is perpetual motion possible with magnets | 1.52 | 0.2 | 2736 | 41 | 18 |
| are perpetual motion machines possible | 1.31 | 0.6 | 3867 | 38 | 46 |
| is a perpetual motion machine possible | 1.06 | 0.2 | 3742 | 38 | 44 |
| why isn't perpetual motion possible | 0.91 | 0.2 | 8524 | 35 | 37 |
| are perpetual motion machines even possible | 0.45 | 0.1 | 7688 | 43 | 31 |
| are perpetual motion machines truly possible | 0.9 | 0.2 | 4692 | 44 | 58 |
| why is perpetual motion not possible | 0.74 | 1 | 5171 | 36 | 97 |
