Do not cause a change in motion. They are equal in size and opposite in direction.
Balanced Forces
100
Inertia
On roller coasters, this type of force lifts me off my seat over hills and keeps me in my seat during loops. What force is this??
100
Gravitational Force
When you drop your book on the floor, you are demonstrating...
100
Net Force: 120 N
You push a car with 120 N. What is the net force?
100
Newton's First Law of Motion
Which one of Newton's laws states that an object in motion stays in motion, unless acted upon by a nonzero net force?
(also known as Newton's Law of Inertia)
200
The SI unit used to measure the strength of a force.
Newton
200
A.) They Repel
B.) They Attract
A.) What happens when the north poles of two magnets are drawn near each other?
B.) What happens when the opposite poles of two magnets are drawn near each other?
200
Applied Force
When you pull a chair across a room, you are demonstrating...
200
Net Force: 70 N to right.
A student is pushing on a piano using 30 N to the right. Another student is pulling the same piano using 40 N to the right. What is the net force that the students are using
to move the piano? Direction?
200
Newton's Third Law
Which of Newton's Law's states that if one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object.
300
The force that one surface exerts on another when two surfaces rub against each other.
(CONTACT FORCE)
Friction
300
Mass and Distance
Two factors that affect the gravitational attraction between objects are:
300
Electrical Force
When you make a sock stick to your shirt,you are demonstrating...
300
Net Force: 10 N to the LEFT
Four friends are playing tug-of-war, two versus two. The two friends on the left are pulling 20 N each, and the two on the right are pulling 15 N each. What is the net force and which side is going to win?
300
Reaction Force
When you sit on a chair, the chair exerts a ________ _____, which prevents you from falling to the ground.
400
A force that is put on an object by another object.
(CONTACT FORCE)
Applied Force
400
Their force increases!!
What happens to the gravitational force between two objects when their masses are increased?
400
Gravitational Force
When you stand on a bathroom scale, it displays the __________ Earth is exerting on you.
400
Net Force: 52 N to the left.
A box has a force of 80 N to the left applied to it. It also has a force of 28 N to the right applied to the box. What is the net force?
400
Newton's Second Law of Motion
Which of Newton's Laws states that an object's acceleration depends on its mass and on the net force acting on it?
500
A force between two charged objects.
Force acting at a distance
(NON-CONTACT)
Electrical Force
500
Strength and Direction
What is one of the two pieces of information do you need to describe force?
500
Gravitational, Electrical, and Magnetic
Name the three forces that act at a distance.
(NON-CONTACT)
500
Net Force: 160 N to the Left
A moving company is moving furniture. Two movers are moving a large cabinet. One mover is applying a force of 75 N to the left and the other mover is applying 85 N to
the left. What is the net force that is being used to move the cabinet? Direction?
500
True
Acceleration= Net Force/ Mass
The larger the MASS, the more FORCE is needed to maintain a desired acceleration.
True or False
If you increase the mass of an object, but keep the force on it constant, its acceleration DECREASES.