force is mass * acceleration
so 2kg * 2m/s^2 = 4 N
A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
-identifies an electric charge
-it can identify its polarity (positive or negative) if you compare it to a charge that you already know
-can identify the magnitude of a charge (how big of a charge it is)
A good way to do that is to talk abt anything, TALK MORE NOT LESS:)
