Speed
Distance/Time
Acceleration
Final Velocity - Initial Velocity / Time
Newton's 2nd Law of Motion
Force = Mass x Acceleration
Universal Law of Gravity
Force = (Gravity Mass 1)(Mass 2) / Distance Squared
Weight
Mass x Free Fall Acceleration
Newton's 3rd Law
Mass x Velocity = Mass x Velocity
Momentum
Mass x Velocity
Distance
1/2 Gravity x Time Squared
The Equilibrium Rule
The Vector Sum of Force = 0
Hang Time
Square Root of 2 Distance / Gravity
Impulse
Force x Time
Finding Your Weight in Newton's
Take Your Weight and Divide by 2.2 and then Multiply By 9.8
Inertia
The sluggishness or apparent resistance an object offers to change in its state of motion.
Speed
Distance traveled per time.
Velocity
The speed of an object and specification of its direction of motion.
Acceleration
Rate at which velocity changes with time; the change in velocity may be in magnitude or direction or both.
Free Fall
State of free fall from air resistance and other forces except for gravity.
Mass
The quantity of matter in an object.
Weight
The gravitational force exerted on an object by the nearest most-massive body.
Kilogram
The fundamental SI until of mass. One kilogram is the amount of mass in 1 liter of water.
Newton
The SI unit of force.One Newton is the force that will give an object of mass 1 kg an acceleration of 1 m/s squared.
Volume
The quantity of space an object occupies.
Force
Any influence that can cause an object to be accelerated, measured in Newton's.
Mechanical Equilibrium
The state of an object or system of objects for which any impressed forces cancel to zero and no acceleration occurs.
Static Equilibrium
An object that is not moving and has 0 acceleration.
Dynamic Equilibrium
An object is moving, without accelerating.
Friction
The resistive forces that arise to oppose the motion or attempted motion of an object past another with which it is in contrast.
Terminal Speed
The speed at which the acceleration of a falling object terminates because friction balance the weight.
Momentum
The product of the mass of an object and its velocity.
Impulse
The product of the forces acting on an object and the time during which it acts.
Relationship of Impulse to Momentum
Impulse is equal to the change in the momentum of the object that the impulse acts on.
Conservation of Momentum
When no external net force acts on an object or system of objects, no change of momentum takes place.
Interaction
Mutual action between objects in which each one exerts an equal and opposite force on the other.
Force Pair
The action and reaction pair of forces that constitute an interaction.
Force Vector
An arrow drawn to scale so that its length represent the magnitude of a force and its direction of the force.
Velocity Vector
An arrow drawn to scale so that its length represents the magnitude of the velocity and its direction represents the direction of motion.
Resultant
The net force of a combination of two or more vectors.
Vector Components
Parts into which a vector can be separated and that act in different directions from the vector.
Net Force
The combination of all forces that act on an object.
Vector Quantity
A quantity that specifies direction and magnitude.
Support Force
The force that supports an object against gravity, sometimes called normal force.
Friction
The resistive force that opposes the motion or attempted motion of an object through a fluid or past another object with which it is in contact.
Air Resistance
The force of friction acting on an object due to its motion through the air.
Hang Time
The time that one's feet are off the ground during a vertical jump.
The Law of Universal Gravitation
Every mass in the universe attracts every other mass with a force that for two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance separating them.
Inverse Square Law
A law relating the intensity of an effect to the inverse square of the distance from the cause.
Weightlessness
A condition encountered in free-fall wherein a support force is lacking.