1. A parachutist drops from a great height. The table below shows his velocity (v m/s) for the time (t seconds) taken. Draw the velocity time graph estimate:
| a) Maximun acceleration occurs when the gradient is zero. This occurs when the gradient of the curve is maximum at point O. |
| The gradient of OP= | change in y | that is | PQ |
| change in x | OQ |
| Therefore, for any velocity - time graph the gradient is acceleration |
| Acceleration of OP = | PQ = | 0.6m/s |
| OQ |
| m/s2 |