Verified Solution • 2025–26 Session
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QJEEM19Ph59be: JEE Main 2019 Physics - Class 11 JEEM19Ph59be Solution: Two particles, of masses M and 2M, moving, as shown, with…
Two particles, of masses M and 2M, moving, as shown, with speeds of 10 m/s and 5 m/s, collide elastically at the origin. After the collision, they move along the indicated directions with speeds u1 and u2, respectively. The values of u1 and u2 are nearly : 
Multiple Choice Options
- A 6.5 m/s and 3.2 m/s
- B 6.5 m/s and 6.3 m/s
- C 3.2 m/s and 6.3 m/s
- D 3.2 m/s and 12.6 m/s
Step-by-Step Verified Solution
2MV, cos 30° + Mv2 cos 45° = 10 M cos 30° + 10 cos 45°
2MV, sin 30° – MV2 sin 45° = –10 M sin 30° + 10 M sin 45°
V2 = 6.3 m/s
2MV, sin 30° – MV2 sin 45° = –10 M sin 30° + 10 M sin 45°
V2 = 6.3 m/s