SCIENCE FLASHCARDS FOR QUIZ#1 GRADE8 1ST QUARTER AUG 21,2024

Force

is simply push or pull. Pull a stuck door, you are applying more force.

Net Force

is the result from combining all the force exerted on an object.

Balanced forces

will not move while the forces acting on it are balanced

unbalanced forces

net force of an object is not zero, the forces on the object the unbalanced.

Friction

is a force which opposes motion, important force in our lives

Air resistance

is a force opposes a moving objects. This can be easily seen with falling objects.

Gravity

is a force of attention between two objects.

Mass

quantity of matter that a body contains, remans constant everywhere, KG

Law of inertia, Law of acceleration, Law of interaction

What are the 3 laws of motion

Law of inertia

objects at rest remains at rest / the same

Law of interaction

Also known as law of action and reaction. When body A exerts a force on body B, body B will exert but oppositely directed force on body A.

Law of acceleration

is directly proportional to the magnitude of the net force.

• spaceships in space

• flying objects

• seatbelts in a car

Application of Law of inertia

• pushing an object

• kicking a ball

• rocket launch

Application of Law of acceleration

• walking

• swimming

• rowing a boat

Application of Law of interaction

Dynamics

is the part of mechanics that deals with the causes of motion

Isaac Newton

wrote his ideas on forces and motion based on Galileo’s work

Galileo Galilei

developed ideas about motion contary

sliding

no friction means

Nonfundamental force

gravity, ordinal, forces, applied forces, friction are

Contact force

result from direct physical contact between two objects

• Strong nuclear force

• Electromagnetic force

• weak nuclear force

• Gravitational force

4 types of fundamental force

• Fundamental force

• Non fundamental force

Two types of force

Uniform motion

second part of newton’s first law concerns a state of