Vocabulary
It take more ___________ to move objects with more mass.
force
This helps you know you are in motion.
frame of reference
The force of gravity on an object is called weight. How is it measured?
Newtons
The sum of all the forces that act on an object is called _______________.
net force
The modes of acceleration are
Slow down, speed up, change direction, stop
When two objects touch, rub, roll, or slide against each other.
Friction
To find an object's speed you need time as well as ___________.
distance
Objects with more mass need more _________in order to accelerate.
force
Velocity is the measure of the direction and __________ of an object.
Speed
Objects containing iron can be attracted by _____________.
magnetic force
This pulls objects toward each other.
gravity
The measure of an objects change in position over time is its ________________,
Speed
A moving object will continue to move until a net force acts on it. This is an example of __________.
inertia
A net force acting on an object is zero means the object is equal and ___________.
balanced
Laws of Motion were developed by __________.
Isaac Newton