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Mass ( m 1 = 1 kg ) initially moving at a speed of 10 m/s...

Mass ( m 1 = 1 kg ) initially moving at a speed of 10 m/s , collides in a perfectly elastic collision with ( m 2 = 3 kg ) initially at rest. After the collision m 2 moves with a speed of 4 m/s at an angle of while m 1 moves with a final speed v f 1 at an angle


Determine the final speed vf1 and the angles θ, α.

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