1.4×105 m/sec1.4\times 10^5\mathrm{~m}/\mathrm{\sec }1.4×105 m/sec
2.8×105 m/sec2.8\times 10^5\mathrm{~m}/\mathrm{\sec }2.8×105 m/sec
4.6×105 m/sec4.6\times 10^5\mathrm{~m}/\mathrm{\sec }4.6×105 m/sec
5.6×105 m/sec5.6\times 10^5\mathrm{~m}/\mathrm{\sec }5.6×105 m/sec