Question 30
A parachutist jumps from an aircraft and falls through air. After some time, the parachute opens. The graph shows speed versus time.
a) Describe motion during A–C; C–D; D–F; E–F.
b) State terminal velocity before and after the parachute opens.
c) Calculate average acceleration during A–D and D–F.
Source note: the question-only graph does not visibly label E or F. The historical answer diagram identifies E at 16 s on the lower flat part and F at 18 s on that part; its part (a) says D–E instead of the printed D–F. Keep the original question intervals and explain this difference.
a) Describe motion during A–C; C–D; D–F; E–F.
b) State terminal velocity before and after the parachute opens.
c) Calculate average acceleration during A–D and D–F.
Source note: the question-only graph does not visibly label E or F. The historical answer diagram identifies E at 16 s on the lower flat part and F at 18 s on that part; its part (a) says D–E instead of the printed D–F. Keep the original question intervals and explain this difference.