2021 CAIE AS & A level May June Physics Paper 12 Q. No. 10 (9702/12/M/J/21) by Sajit C Shakya

2021 CAIE AS & A level May June Physics Paper 12 Q. No. 10 (9702/12/M/J/21) by Sajit Chandra Shakya from Nepal Chapter - DYNAMICS 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 Assume that there are no external forces acting on the molecules. What is the magnitude v of the velocity of Q after the collision? A 120 m s–1 B 140 m s–1 C 180 m s–1 D 260 m s–1