What is your average velocity or speed if you travel 500 km in 3 hours

Observations show that interstellar clouds can have almost any shape and

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.

The chart shows daniela’s run through her race. what is her velocity? 1.5 m/s 2 m/s 2.5 m/s 5 m/s