What is the equation for force?

What is the equation for speed?

What does this equation work out?
1/2mv²

What unit is force measured in?

What is the equation for weight?

What does this measure and is always true for? 9.81 m/s 2

What is potential energy measured in?

Fill in the blanks for the next two words:
Force is a ---- or a ---- in a direction

What happens when two objects or surfaces touch?