"As an airplane taxies on the runway with a speed of 18.645 m/s relative to the ground, a flight attendant walks toward

[answerhappygod]

"As an airplane taxies on the runway with a speed of 18.645 m/s
relative to the ground, a flight attendant walks toward the back of
the plane with a speed of 0.984 m/s relative to the plane. What is
the flight attendant s speed relative to the ground?"
17.661 m/s
15.8949 m/s
15.01185 m/s
14.1288 m/s
22.07625 m/s