Early Quantum Theory A photon of wavelength 2x1014m hits a stationary particle of mass

Question

Early Quantum Theory

A photon of wavelength 2×10-14m, hits a stationary particle of mass

3.33×10-27 kg, breaking it into two identical pieces that depart at 82.3*(angle) from the photon’s direction

of motion. The photon disappears in the process.

(a) Find the speeds and masses of the pieces.

(b) Does KE increase, decrease, or remain constant?

Science