A-LevelPhysicsDynamicsMay/June 2021Paper 1 Q101 Mark
A nitrogen molecule P travelling at a speed of 320 m s⁻¹ in a vacuum collides with a stationary nitrogen molecule Q. After the collision, P travels at a velocity of 180 m s⁻¹ at an angle of 55° to its original path. Q travels in a direction at an angle of 34° to the initial path of P. [Figure 10.1] Assume that there are no external forces acting on the molecules. What is the magnitude v of the velocity of Q after the collision?
A120 m s⁻¹
B140 m s⁻¹
C180 m s⁻¹
D260 m s⁻¹
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of dynamics within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep