Plz tell me what is dry ice?

In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Me with this and you will be marked brainliest