E_{A} = 5 GeV = 8 × 10^{10} J

E_{A} = γ_{A}m_{p}c^{2}

γ_{A} = 5.33

v_{A} = 0.982242c = 2.94469 × 10^{8}m/s

t_{A} = \frac{1.5 × 10^{11} m}{2.94469 × 10^{8} m/s}

= 509.4 seconds

E_{B} = 10 GeV = 16 × 10^{10} J

E_{B} = γ_{B}m_{p}c^{2}

γ_{B} = 10.66

v_{B} = 0.995590c = 2.98470 × 10^{8}m/s

t_{B} = \frac{1.5 × 10^{11} m}{2.98470 × 10^{8} m/s}

= 502.6 seconds

t_{A} − t_{B} = 6.8 seconds