A force created when two solids rub against each other
friction
F = m * a
Newton's Second Law
Two equal forces acting in opposite directions
balanced force
When an object blocks the path of light it creates
A shadow
Any push or pull that acts on an object
f
orce
A force's unit of measurement
Newton or N
An object in motion or at rest will stay in motion or at rest
Newton's First Law
Two forces acting together in the same direction
combined force
What time of day is your shadow the shortest?
Noon
When speaking scientifically, this means ANY change in motion
acceleration
A force that pulls towards the center of the earth
gravity
Newton's Third Law
When forces are balanced net force equals
zero
What time of day is your shadow the longest?
Sunrise or Sunset
A force that acts from a distance
Non-Contact Force
A ball throw in the air comes back down to earth while experiencing these two types of force
gravity and air resistance
Which law explains why inertia occurs
Newton's First Law
When forces act on an object in equal and opposite directions, this is the result.
nothing changes
forces cancel each other out

Name 3 forces at work in the process of this jump
Friction, Air Resistance, Gravity
When an objects resists change in motion
inertia
Three types of Non-Contact force
Gravity, Magnetic, Electric
greater
The net force in this picture is
4N to the East
What instrument or tool do we use to measure force?
A spring scale
When an object is at rest or moving in the same direction and speed
uniform motion