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Two pucks, identical in every way except color, slide across a frictionless surface. The initial velocity of the blue puck is 4.00 m/s at $30^\circ$ North of East. The initial velocity of the red puck is 5.00 m/s at $53^\circ$ North of West. After the two pucks collide, the final velocity of the red puck is 4.00 m/s North.

What is the velocity of the blue puck after the collision?

A

$v_{1f} = 2.04 \text{ m/s} \text{ East}$

B

$v_{1f} = 2.04 \text{ m/s} \text{ at }77.3^\circ \text{ North of East}$

C

$v_{1f}=5.00 \text{ m/s} \text{ East}$

D

$v_{1f}=5.00\text{ m/s} \text{ at } 77.3^\circ \text{ North of East}$

E

$v_{1f}=6.46 \text{ m/s} \text{ East}$

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