Why would an orange roll off your cafeteria tray if you stopped suddenly? the net force on the orange is zero. the orange’s inertia keeps it in motion. rolling friction puts the orange in motion. gravity acts on the orange.

The orange roll off the tray due to inertia of motion.

Explanation:

As we move carrying the tray and orange placed on it at rest, the orange and the tray moves together with our body. As we suddenly stop, the tray and our body comes to rest instantly since they are in contact. The orange placed on tray keeps moving due to inertia of motion and hence rolls of your tray.

snell's law

refractve index = sin incidence / sin refraction

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.