Vocabulary
A contact force that is perpendicular to the surface that an object contacts.
Normal Force
If an object is pushed 300 N left and 200 N left my net force is?
500 N Left
If both my arrows are going in the opposite direction I will calculate my net force by ______?
Subtracting
What are three contact forces we have learned ?
Applied force, Friction, and Normal Force
The action and reaction forces described by Newton’s Third Law of Motion
Force Pairs
If an object is pushed 100N to the right and also being pushed 100N to the left then the net force will be ?
0
If both my arrows are going in the same direction I will calculate my net force by ______?
What are two non-contact forces we have learned?
Magnetism and Gravity
Definition: Not moving and not intended to move.
Example: a balanced force
Stationary
A ball is kicked 350N to the right, but someone else kicks the ball back 50N to the left what is the net force?
300 N right
A hot air balloon is in the air. The forces acting on the balloon is an Upward Force of 5000 and Gravity is 4800. What is the net force and direction
200 N Upwards
A person jumps off a diving board. Initially, gravity pulls them downward with a force of 500 N, and there is no upward force to balance it. Is this balanced or unbalanced?
Unbalanced
The combination of all forces exerted on an object
Net Force
If an object moves 250N left and 100N right my net force is ?
150N left
A cars brakes pushes it 2N backwards and the friction pushes it 3N backwards, but the car is still moving 10 N forward. What is my net force and which direction am I going?
5N forward
Meloni holds a textbook in her hand while a similar textbook lies on a table nearby. Each book weighs 20N. Describes the forces acting on both books?
Both books experience a 20 N normal force and a 20 N gravitational force.
If one object exerts a force on another object, then the second object exerts a force of equal magnitude in the opposite direction on the first object
Newton's Third Law
Write a scenario that will create a balanced force
Has to equal 0 newtons
A force is applied to an object causing it to move to the right. What are the four forces acting on the object?
Draw a picture on your whiteboard
Normal force goes up, Gravity goes down, applied force goes to the right, and friction goes to the left
Can a balanced force have motion?
No