# data[].attributes.body
the combination of all forces acting on an object

# data[].attributes.body
the rate at which velocity changes

# data[].attributes.body
amount of matter in an object.

# data[].attributes.body
the measure of the gravitational force on an object

# data[].attributes.body
a force that attracts other objects together. strength of gravity between objects depends on distance of the objects and the size of the objects

# data[].attributes.headline
forces in the same and different direction

# data[].attributes.subject
forces in the same and different direction

# data[].attributes.body
combination of all forces acting on an object

# data[].attributes.body
gravity, friction

# data[].attributes.body
expressed in newtons

# data[].attributes.body
a change in velocity.

average velocity= final velocity-starting velocity/time it takes to change velocity

# data[].attributes.headline
velocity: speed of something in a certain direction

# data[].attributes.subject
velocity: speed of something in a certain direction

# data[].attributes.body
measured by dividing distance and time

# data[].attributes.body
the starting point of motion. does not change place

# data[].attributes.body
Chapter 1 review