UJI KEKERASAN
86 11 2 1 1 61 23 10 3 3. 78 21 1 47 28 8 5 12 A push or pull The rate at which something moves in a certain amount of time Increase in speed of something.
NEWTON’S FIRST LAW Definition- An object at rest will remain at rest, or if it is moving, it will continue to move with constant velocity, unless acted.
Simple Machines
What causes acceleration?
