A particle of mass m moving at 5.0 m/s in the positive x direction makes a glancing elastic collision with a particle of mass 2m that is at rest before the collision.After the collision,m moves off at an angle of 45º to the x axis and 2m moves off at 60º to the x axis.The speed of m after the collision is
A)4.5 m/s
B)2.5 m/s
C)3.3 m/s
D)1.8 m/s
E)1.1 m/s

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The Answer of A particle of mass m moving at 5.0 m/s in the positive x direction makes a glancing elastic collision with a particle of mass 2m that is at rest before the collision.After the collision,m moves off at an angle of 45º to the x axis and 2m moves off at 60º to the x axis.The speed of m after the collision is
A)4.5 m/s
B)2.5 m/s
C)3.3 m/s
D)1.8 m/s
E)1.1 m/s

A Particle of Mass M Moving at 5