A-LevelPhysicsDynamics9702/12 · Oct/Nov 2021 · Q91 Mark
The diagram shows two parachutists, X and Y, moving vertically downwards. [Figure 9.1] The total mass of parachutist Y and his parachute is twice the total mass of parachutist X and his parachute. At this moment, the air resistance on parachute Y is twice the air resistance on parachute X. Neither parachutist has reached his constant (terminal) velocity. Which statement describes the acceleration of Y compared with the acceleration of X?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AThe acceleration of Y is half the acceleration of X.
BThe acceleration of Y is the same as the acceleration of X.
CThe acceleration of Y is more than the acceleration of X, but less than twice the value.
DThe acceleration of Y is twice the acceleration of X.
✓ Correct answer
B: The acceleration of Y is the same as the acceleration of X.
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Dynamics and see which topics are most likely to come up next.
Sign up free →