haha ok, that explains the strange typos . . .
Velocity is how fast the robot moves. If you are driving a car at 30km/hr, that is velocity.
Acceleration is how fast the robot can increase velocity.
I recommend using about 1.5m/s acceleration, with velocity at 2m/s. Lets say mass was 20kg.
Now use this equation:
Torque * rps > = Mass * Acceleration * Velocity / (2 * pi)
Torque * rps > = 20kg * 1.5m/s * 2 m/s / (2 * pi)
Now find a motor you like to buy, and multiply the torque and rps of that motor together. If that number is higher than the calculation on the right side of the equation, then that motor will do what you need.
If you cant find a motor that will work, you will have to reduce expected mass/velocity/acceleration.