The kinetic energy of a proton is 80% of its total energy. What is the momentum in kg?m/s of the proton?
A)
5.0 × 10-19 kg?m/s
B)
2.5 × 10-19 kg?m/s
C)
5.0 × 10-18 kg?m/s
D)
2.5 × 10-18 kg?m/s
E)
1.5 × 10-19 kg?m/s
D
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