A neutron with a mass of 1.67 × 10^-²⁷ kg traveling east with a kinetic energy of 2.00 × 10^-²¹ J collides perfectly elastically with a helium nucleus with a mass 6.68 × 10^-²⁷ kg that is initially at rest. After the collision, the neutron has a kinetic energy 1.80 × 10^-²¹ J. What angle was the neutron deflected during the collision? A)142° B)117° C)38.0° D)180° E)32.8°

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The Answer of A neutron with a mass of 1.67 × 10^-²⁷ kg traveling east with a kinetic energy of 2.00 × 10^-²¹ J collides perfectly elastically with a helium nucleus with a mass 6.68 × 10^-²⁷ kg that is initially at rest. After the collision, the neutron has a kinetic energy 1.80 × 10^-²¹ J. What angle was the neutron deflected during the collision? A)142° B)117° C)38.0° D)180° E)32.8°

A Neutron with a Mass of 1