friction means 2 pieces of paper rub together that is friction.force means you put pressure to something.
motion is like an action.
bonding means to socialize and do stuff together.
harpoon is a thing that shoots a steel arrow here is a picture.
We watched Mythbusters it was awesome.
This math is called scientific notation. It is like hi school math but not that hard. For an example 2000 will be 2x10-3 and the last number is supposed to be little so you understand.
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