T1L1: Describing Motion and Force
Warm-Up:
How do you know if you are moving? _____________________________________________
All objects move by a ___________________, a push or pull
An object is in motion if its _________ changes when compared to another object.
We use a _____________ point to compare moving objects.
If a reference point moves like you do, then you cannot tell if you are moving.
That's why reference points need to be _________________________.
Everything in the universe right now is ___________. Including you!
In reality, all ________________________ are moving.
When your reference point is the _________, we just say you are "not" moving but standing still.
When your reference point are the stars, you are _______________ in space!
Forces are measured in ____________________________. (e.g. 5 N)
Forces are a _________________ or ___________ on an object
An ______________ tells us if a force is a push or pull.
_____________: when two surfaces ___________ against each other
_____________: the force that pulls objects due to their large _______
There are many many other forces…
if two forces act on an object in the _____________ direction and it does not move, then the
forces are ___________.
if two forces act on an object in the opposite direction and it ___________, then the forces are
___________________________________________________
To calculate net force, _______________ the larger force from the opposite smaller force