A cheetah's ______________ can be measured with a stopwatch.
speed
When you jump in the air _____________ pulls you down.
gravity
A force that slows down moving things
friction
A push or pull is called a_________________.
force
A simple machine that moves against a fulcrum is called a ______________.
lever
how far something moves in a certain amount of time
speed
We can tell where an object is by its ________________.
position
A force that pulls down on objects
gravity
to move left and right quickly
zigzag