Forces
What is a force
A push or pull on an object
What are the two main types of forces
Contact and non contact or At a distance
What is the net force of a balanced force
What is net force
The total of all forces acting on an object
An upward force from air movement over wings
lift
Magnitude and Direction
What are contact forces
Forces that touch each other
What type of movement happens when forces are unbalanced?
The object moves in the direction of the stronger force
if the forces act in the same direction what operation would you use to find the net force?
Add
Downward pull
weight or gravity
What is the unit of measure for forces?
Newtons
What are non-Contact (at a distance) forces?
Forces that act with out touching
An apple sitting on a desk has what two forces working on it.
Gravity and normal force
What operation would you use to find the net force of forces acting in different directions
Subtraction
Forward force from engines pushing air backwards. Might be when a paper airplane is thrown.
Thrust
Who was the scientist that determined the laws related to forces
Isaac Newton
What is one type of contact forces?
Friction
If the the motion has a net force that is not zero, is it balanced or unbalanced?
Unbalanced
Two people are applying force to an object, one is pushing with 35 newtons to the left and 10 newtons to the right. What is the net force?
25 newtons to the left
Air resistance pushing opposite to motion
Drag
What is magnitude?
How strong the force is.
What is an example of Non-contact forces?
Gravity
An object does not move due to a force, is it balnaced or unbalanced?
balanced
Jeny and Mark are moving a bookshelf he pushes to the left with 30 n and she pulls to the left with 20 n. What is the net force acting on the shelf
50 n to the left.
If the lift is greater than weight, and thrust must be greater than drag. What is going to happen to the object
the object should fly