gen physics 2nd q

31問 • 1年前

問題一覧

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

Force

• Forces between two objects that are physically touching each other

CONTACT FORCES

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

NON-CONTACT FORCES

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

Tension (T)

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

Friction

- is the friction preventing objects at rest from moving.

Static friction

is the friction preventing objects at rest from moving.

Kinetic friction (k)

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

Normal Force (N)

- 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

Air Resistance

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

Applied Force

- Also called as the restoring force, Fs.

Spring Force

- pulls objects with mass toward each other.

Gravitational Force (G)

- 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.

Weight

- experienced by any magnetic material in a magnetic field.

Magnetic Force

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

ARISTOTLE

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

Inertia

• 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.

NEWTON'S FIRST LAW OF MOTION

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

NEWTON'S SECOND LAW OF MOTION

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

NEWTON'S THIRD LAW OF MOTION

• 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.

FBD method

• 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

Energy

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

Work

SI Unit for Energy

Joule

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

KILOWATT-HOUR

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

MECHANICAL ENERGY

is the energy associated to moving objects.

Kinetic Energy

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

Work and 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

POTENTIAL ENERGY

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

GRAVITATIONAL POTENTIAL ENERGY

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

Elastic potential energy

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

LAW OF CONSERVATION OF ENERGY

Gen Chem

Joshua Timbol · 65問 · 2年前

Gen Chem