| 1. | The displacement in time T must always take non-negative values. |
| 2. | The displacement x in time T satisfies \(-v_0 \mathrm{~T}<x<v_0 \mathrm{~T} .\) |
| 3. | The acceleration is always a non-negative number. |
| 4. | The motion has no turning points. |
| (a) | \(x(t)>0\) for all \(t>0\) |
| (b) | \(v(t)>0\) for all \(t>0\). |
| (c) | \(a(t)>0\) for all \(t>0\). |
| (d) | \(v(t)>0\) lies between \(0\) and \(2\). |
| 1. | (b), (c) |
| 2. | (a), (b), (d) |
| 3. | (a), (d) |
| 4. | (b), (d) |