Science 8 - Unit 5

Motion

The action or process of moving or being moved

Position

A place where something is located or been put

Reference point

A standard for evalution, comparison

Scalar

Of quanity, not including direction

Vector

Including direction

Maximum speed formula

Greatest change in between two points

Distance

An amount of space between points

Displacement

How far away you end up from your starting place

Average speed formula

Total distance/ total time

Speed

How fast something is moving

Instantanous speed

Speed taken at any time

Velocity

Speed in a given direction

Acceleration

A vehicles capacity to gain speed in a certain amount of time

Speed formula

speed=distance/time

Time formula

time=distance/speed

Distance formula

distance=speedxtime

Velocity equation

velocity=displacement/time

How is sector different from vector

vector cares about direction

What are the acceptable units of speed

m/s, km/hr

Newtons first law

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.

What is inertia

resistance to change in motion (stay straight)

Unbalenced force

causes an object to move, stop, or change direction.

Balenced force

Equal forces acting on an object in opposite directions (not moving unless in space)

Force equation

Force= mass x acceloration

Acceloration due to GRAVITY

a = 9.8 m/s

Newtons second law

heavier things need more force to move. a harder push makes things go faster.

Types of forces

contact and non contact (gravity, friction, tension)

Friciton

the resistance that one surface or object encounters when moving over another.

Newtons third law

For every action there is an equal and opposite reaction

Action/reaction pairs and forces

a foot pushing a ball (action) ball pushing foot (reaction)

Newtons sign

Zig zag e

Mass equation

Mass= force/acceloration

acceloration formula (other one)

force/mass

Types of contact forces

friction, normal force, spring, air resistance, applied force

Types of non-contact

gravity, magnetic, electrical

What is net force

All forces added together

Net force equation

Applied force- regular force

units for second law equations

ALWAYS KM ( divide by 1,000)