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the speed and direction of a moving object
velocity

How fast an objects position changes with time at any given moment.
speed

The force of gravity between Earth and an object
weight

Forces that cancel each other out when acting together on a single object.
balanced forces

Change in velocity with respect to time
acceleration

A push or pull exerted by one object on another, causing a change in motion
force

the tendency of a moving object to keep moving in a straight line or of any object to resist a change in motion.
inertia

A force that opposes the motion of one object moving past another
friction

the force of attraction between any two objects due to their mass.
gravity

the force one object applies to a second, as in newtons' third law of motion, which states, "for every action, there is an equal but opposite reaction.
action

Newton's First law of motion states:
Objects at rest remain at rest and objects traveling at a steady rate in a straight line continue that way until a force acts on them.

Newton's second law of motion states:
when an unbalanced force acts on an object, the object's acceleration equals the force divided by the object's mass

Newton's third law of motion states:
For every action, there is an equal an opposite reaction.

Newton's Law of Gravitation states:
The force of gravity between two objects increases with the mass of the objects and decreases with the distance between them squared

Define acceleration
a change in velocity

Define deceleration
occurs when a force causes the speed of an object to decrease

define velocity
the speed and direction of a moving object

Know how to use the formula a = F / m
Kyle pushes a rock that weighs 5 kg (mass) with a force of of 15 N (force). How much acceleration will the rock have?
3 meters per second each second

how do velocity and speed differ?
Velocity includes the direction and speed is only how fast it changes position

what are the ways in which an object can change acceleration?
when velocity changes acceleration changes. when a force causes the speed to decrease, it is called deceleration.

