$2.21 \times 10^8 \textrm{ m/s}$ $2.00 \times 10^8 \textrm{ m/s}$ $1.97 \times 10^8 \textrm{ m/s}$ Giancoli 7th Global Edition, Chapter 23, Problem 25(1:10) Chapter 23, Problem 25 is solved. Start My Free Week View sample solution