Question

Below are four pairs of velocities:
1) -35m/s 35m/s
2) -35m/s -45m/s
3) 35m/s east 35m/s north
4) 35m/s west 35m/s west

Which of the four pairs has the same speed and same velocity? Which of the four pairs has the same speed and different velocities? Which of the four pairs have different speeds and different velocities? Explain how you know.