If Danny pushes on a door with 100N of force and Kyran pushes in the opposite direction with 100N of force, the door will not move.
Are these forces balanced or unbalanced?
Balanced Forces

If Ms. Garvey pulls on a rope with 50 N of force and Ms. Stolaruk joins her and pulls on the rope in the same direction with 50N of force, what is the net force on the rope?
100N of force to the left
A lamp sitting on a table.
Balanced
What is the definition of balanced forces?
What is the definition of unbalanced forces?
Balanced forces are equal and do not cause motion
Unbalanced forces are unequal and do cause motion.
an external contact force exerted on an object by a person or another object, causing the object to move, accelerate, or deform
Applied force
If a class plays tug of war and one side pulls with more force, the rope moves.
Are these forces balanced or unbalanced?
Unbalanced Forces

If Ms. Byrnes pulls on her desk with 10N of force and ms. Preszler pulls in the OPPOSITE direction with 10N of force, what is the Net Force on the table?
0N. The forces are balanced
A car accelerating around a mountain curve.
Unbalanced
When an object has an unbalanced force act on it, the speed of the object will either increase or decrease? T/F
True
the support force exerted by a surface, acting perpendicularly (at a right angle) to the surface, that prevents an object from passing through it
Normal
Mr. Adams pushes his shopping cart down the aisle and it moves. Are these forces balanced or unbalanced?
The forces are unbalanced.
A student pushes on a cart with 20N of force. A student pushes back in the opposite direction with 10N of force. What is the net force on the cart?
10N of force to the left
Two ice skaters moving in a straight line at a constant speed.
Balanced
What is drag force?
a type of frictional force (or fluid resistance) that acts opposite to the direction of an object's motion through a fluid, such as air or water
a contact force transmitted axially through a string, rope, cable, or chain when pulled tight from opposite ends
Tension force
If Hunter leans on a wall with 15N of force and the wall does not move, are the forces balanced or unbalanced?
Balanced
If net forces are 0N, are the forces balanced or unbalanced?
If net forces are more than 0N, are forces balanced or unbalanced?
If 0N, the forces are balanced.
If more than 0N, the forces are unbalanced.
A soccer ball sitting on the ground motionless.
Balanced
What is terminal velocity?
When force of gravity downwards and force of air resistance upwards are equal. The result is that the falling object now falls at constant speed.
force produced by a propulsion system—such as an engine or propeller—that moves an aircraft, rocket, or marine craft forward
Thrust