Explanation:
string roller is called an example of wheel and axel because The thin rod which needs to be turned is called the axle and the wider object fixed to the axle, on which we apply force is called the wheel.
hence the we apply force on the roller and the string gets tight.
Lake effect is one condition
Sorry if this didn't help- I'm not quite sure what you're asking.
Matter is any substance that has mass and takes up space.
Answer:
The First is an example of acceleration, the second is an example of velocity
We cannot answer the question if we do not have the answers - sorry!!