Box is going at 1 inch per second or 100 pixels per second.

Speed of Robot in Pixels: Stuff
Car at Average Highway Speed - 63 ft/s
Bicycle- 20.53 ft/s
Person Running- 24.93 ft/s
Person Walking- 4.53 ft/s
Dog Running - 27.86 ft/s
Yardstick - 3 ft