A FORCE/FRICTION is either a push or pull.
force
A PUSH/PULL force moves something away from you.
push
A PUSH/PULL force moves something towards from you.
pull
What force is this? SQUASH/STRETCH
stretch
Forces change the COLOR/DIRECTION of an object.
direction
We can only see the AMOUNT/EFFECT of a force.
effect
Objects CAN/CANNOT move by themselves.
cannot
A DIRECTION/SURFACE can be rough or smooth.
surface
We make GRAVITY/FRICTION rubbing our hands.
friction
Surfaces can have different DIRECTION/TEXTURES.
textures
The surface is SMOOTH/ROUGH
smooth
The surface is SMOOTH/ROUGH
rough
Friction is moving to the RIGHT/LEFT.
left
Friction moves in the SAME/OPPOSITE direction of motion.
opposite
What is this tool?
forcemeter
