Question
For spacecraft, thrust is equal to the change in propellant mass, times standard gravity, times the specific form of this quantity. For 10 points each:
[10m] Name this quantity, which is equal to the change in momentum.
ANSWER: impulse [prompt on J]
[10e] Impulse is equal to this quantity times time, or the integral with respect to time of this quantity. This quantity, per Newton’s second law, is equal to the mass times acceleration.
ANSWER: net force [prompt on F]
[10h] The required propellant to achieve a particular velocity is given by this equation. It states delta-v equals exhaust velocity times the natural log of the ratio of initial and final mass.
ANSWER: rocket equation [or Tsiolkovsky equation or Tsiolkovsky rocket equation or ideal rocket equation or classical rocket equation]
<Science - Physics>
Summary
| 2023 ACF Fall (Rutgers) | 10/14/2023 | Y | 5 | 24.00 | 100% | 80% | 60% |
Data
| NYU B | University of Delaware B | 10 | 10 | 0 | 20 |
| Princeton | Swarthmore B | 10 | 10 | 10 | 30 |
| Maryland | Swarthmore A | 10 | 10 | 10 | 30 |
| Rowan | University of Delaware A | 0 | 10 | 0 | 10 |
| Columbia A | Columbia B | 10 | 10 | 10 | 30 |