[填空题]
Calculate the kinetic energy and momentum(x r.( jg+)9r,sy opu crkjr/jdhz/.z, bl- hf4 0mnwu b3y180mr7okcmb,l gs of a proton ($m_0 =1.67 \times 10^{-27} \, \text{kg}$) traveling $7.35 \times 10^7 \, \text{m/s}$. By what percentages would your calculations have been in error if you had used classical formulas?
KE = $ \text{MeV} \, $ with an error of %
p = $ \times 10^{-19} \, \text{kg·m/s}$ with an error of %
