Free Body Diagrams
A visual representation of all the forces acting on an object.
What is free body diagram
The total force acting on an object.
What is the net force
Newton's First Law of Motion
What is an object at rest stays at rest, an object in motion stays in motion, unless acted upon by an unbalanced force
Inertia depends only on this.
What is mass
The force that pulls objects to the Earth
What is the gravitational force
Sign of forces pointing up or to the right.
What is positive
Balanced forces result in this type of motion.
What is stationary or constant velocity.
Newton's Second Law
What is F = ma or the relationship between force, mass, and acceleration
A soccer ball rolling across the ground after being kicked is an example of this law.
What is Newton's First Law
The pulling force from a rope
What is tension
Sign of forces pointing down or left
What is negative
The net force of air resistance 6 N up and the gravitational force 10 N down.
What is 4 N down or -4 N.
Newton's Third Law
For every action, there is an equal and opposite reaction
Tim pushes on the wall. The wall pushes back on Tim with this amount of force.
What is equal
The force that results from an external action (pushing, pulling, kicking...)
What is applied force
On a free body diagram, the gravitational force points in this direction.
What is down
The net force of a cart that has a normal force of 6 N up, a gravitational force of 6 N down, an applied force of 6 N left, a frictional force of 5 N right.
What is 1 N left or -1 N.
The tendency of an object to resist a change in motion
What is inertia
A car with a mass of 1100 kg accelerates at 2 m/s/s. The net force acting on the car is this.
What is 2200 N
The force that opposes the motion of an object on a surface
What is friction
On a free body diagram, the length of the arrow corresponds to this.
What is the magnitude of the force.
Unbalanced forces result in this type of motion.
What is accelerating.
A 5 kg block is being pushed across a table with a net force of 10 N. The acceleration of the block is this.
What is 2 m/s/s
Sam travels to the moon which has an acceleration due to gravity of 1.6 m/s/s. This is how much Sam would weigh on the moon if he had a mass of 65 kg.
What is 104 N
The force that is perpendicular to the surface that an object is on
What is the normal force