According to Newton's First law what force is needed to move something.
What is unbalanced force?
100
A force that opposes motion.
What is Friction?
100
Sand is placed on roads to do what to friction?
What is increase?
200
According to Newton's First Law, what will happen to an object at rest if no unbalanced force acts on it?
What is it will stay at rest?
200
Friction happens when one object surface touches another objects______________
What is surface?
200
If moving something heavy you want to _________friction.
What is decrease?
300
What has inertia.
All objects?
300
Another word for friction is.
What is rubbing?
300
Which creates more friction sandpaper or tiles?
What is sandpaper?
400
If an object is moving, and nothing acts on it what will happen?
It will keep moving at the same speed in a straight line?
400
Provide one example of helpful friction and useful friction.
What is answers may vary......
400
What could help you move a heavy couch across a room?
What is add wheels, or sliders?
500
State the entire 1st Law of Newton - both parts.
What is objects at rest will stay at rest and object that are moving will keep moving at a constant speed and in a straight line unless an unbalanced force acts on it?
500
This type of friction acts against falling objects.
What is air resistance?
500
Wax and oil are types of ____________ which help to reduce friction.