Question
What is a proton? State its relative mass and charge.
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| v(m/s): | 0 | 5 | 8 | 12 | 18 | 25 | 30 | 35 | 40 | 45 |
| t(s): | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |