forces
The two main types of forces
What is push or pull
The two different types of energy
What is kinetic and potential energy?
how many simple machines are there?
Six
if you drag something towards you, what force is used?
Pull
How many different types of energy are their?
what type of energy is used if you throw a tennis ball?
Kinetic
How many different types of forces are there (including the sub-forces)?
Four