Contact Forces
This type of force requires two objects to physically touch.
Contact force
A force that pulls objects toward Earth
Gravity
If forces are balanced, the object will
Stay still
A box pushed left with 20N and right with 17N
3N left
Newton’s 1st Law is also called this
Inertia
A force that slows objects down when they move across a surface
Friction
This force attracts or repels based on poles (north and south)
Magnetism
An object is pushed to the left with 10N and pushed to the right with 10N.
Balanced forces
A ball is pushed left with 5N, and right with 11N
6N right
This law says force equals mass times acceleration
Newtons 2nd Law
The force you apply when you push or pull something.
Applied Force
A force that acts without touching, such as gravity or magnetism.
A book sitting on a table is an example of this.
Balanced forces
When net force is not zero, the object will
Move
According to Newton’s 3rd Law, for every action, there is
An equal and opposite reaction
The force that is transmitted through a string, rope, cable, or wire when it is pulled tight by forces acting from opposite ends.
Tension
What type of force causes a ball to hit the ground after you throw it?
Gravity
A tug-of-war where one team pulls the other across the line.
Unbalanced force
If two people push a box with equal force in opposite directions, the net force is
Zero
The reaction to this action: your foot kicking a ball
The ball hits your foot
When you open a door by turning the handle and pushing it, you are applying this type of force.
Applied Force
What type of force allows metal objects to be moved or picked up?
Magnetism
An object is being pushed to the right with 15N, and to the left with 20N.
Unbalanced
An object pushed right with 594N, and left with 594N
0N , no net force
The reaction to this action: A bug hits your windshield
The windshield hits a bug