Basim’s robotics team builds a robot that travels at 9 m/s and can fire a tennis ball at a target. Which would result in a judge who is sitting beside the testing ground observing the tennis ball having a speed of 7 m/s?

The robot fires the ball forward with a speed of 7 m/s.
The robot fires the ball backward with a speed of 7 m/s.
The robot fires the ball backward with a speed of 2 m/s.
The robot fires the ball forward with a speed of 2 m/s.