is a push or a pull is a quantitative description of a object's interaction with another object, a group of objects, or its surroundings

• Forces between two objects that are physically touching each other

• Forces that act between two objects that are not physically touching each other.

- is the force associated with a string rope, cord, etc.

- is a force that exists between an object and a surface in contact. _ is parallel to the surface, but opposite in direction.

- is the friction preventing objects at rest from moving.

is the friction preventing objects at rest from moving.

- When objects are at rest or pushing on a surface, the surface exerts a force to the object perpendicular to the surface.

- also known as drag force, it is the force that acts opposite to the motion of an object in air. It is also present in water or any liquid. thus, it is generally referred as fluid resistance

- The type of force applied by a person to an object.

- Also called as the restoring force, Fs.

- pulls objects with mass toward each other.

- is the force acting on an object that is due to the gravity between the object and Earth. The force is always downward, towards the ground.

- experienced by any magnetic material in a magnetic field.

____'s view of motion is "it requires a force to make an object move in an unnatural" manner Or, more simply, "motion requires force"

Galileo explained the theory of motion that every object had a property which Newton called ___.

• An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• Once a force acts on an object making it unbalances, it will accelerate and can be expressed

• For every force of action, there is an equal but opposite reaction.

• The ___ is used to identify all the type of forces acting on an object including the direction of the forces. • Objects are represented as a simplified version of the body, like a dot or a point. • Forces are represented with arrows pointing to the direction of the force. • A coordinate system is used.

• is a quantitative property of a physical system. It is transferred to a another system to do work, thus, a system's energy is the amount of work the system can do

• is the amount of energy transferred by a force. __ relates force and energy. • Mathematically, it is the dot product of force and the displacement.

SI Unit for Energy

• The amount of work done by power of 1kW in 1 Hour is called

• is the energy of macroscopic particles due to their velocity or position

is the energy associated to moving objects.

• Work is done only when there is a change in an object's kinetic energy.

• is the energy stored in an object when its relative position is changed due to work. The term potential is used because the stored energy has the "potential" to do work when released

• is the energy stored in an object when its height from a reference point is changed due to work.

is the energy stored in a Hookean spring when it was compressed or stretched due to work.

• The ___ states that energy can neither be created nor destroyed - only converted from one form of energy to another