32 terms

Motion

Change in an objects position from a reference point

Reference point

Point where an object can be placed for a position

Position

Location of an object in relation to a reference point

Distance

How long something goes

Displacement

Distance and direction of an objects chance in motion

Same direction add and keep the sign: different directions subtract and keep direction of the larger: opposite direction like north and west use a2+b2+c2 (sorry couldn't get them to be exponents)

What are the rules of displacement

Speed

Distance an object travels per unit of time

Constant speed

Speed neither slows down or speeds up

Changing speed

Speed that is constantly changing

Average speed

Total distance traveled divided by the total time of travel

Instantaneous speed

Speed at any given point in time

Velocity

Speed of an object and direction of its motion

Relative motion

Motion that is happening at the time

Law of conservation of momentum

States that if no external forces act on a group of object the total momentum doesn't change

Momentum

Product of its mass and velocity

Acceleration

Rate of change of velocity

Two objects travel at the same velocity the object with more mass has a greater momentum

Comparing momentums

Circular motion

Acceleration toward the center of a curved or circler path

Projectile motion

Motion that causes something to curve or go downward

Velocity

An objects acceleration Is it's rate of change of ....

Speed and direction

Velocity depends on _____ and ____

Greater

The greater a boulders mass the ___ inertia it has

Direction

Displacement depends on an objects distance and ____ compared to a starting point

Negative

An car that slows down when approaching a stop sign has a ____ acceleration

100 meters west

A sprinter runs 200 meters west and 100 meters east what is her displacement

Time

Speed that can be calculated by dividing distance by___

Instantaneous

The speed of a motorcycle at a particular moment is it's ____ speed

Centimeters

Earths plates only move a few ___ per year

Velocities

Two cars are each traveling at 72 kph one car is traveling northeast and the other is traveling south the cars have different ___

Positive

When an object speeds up it has a ___ acceleration

Negative

When an objects final velocity is less than its initial velocity it has a ___ acceleration

Direction

An object that is changing ___ is even accelerating