Motion and Force
A push or pull
Force
How fast something goes
Speed
Resistance to change in motion.
When an object rolls across a surface
Rolling Friction
A volleyball is hit and experiences a net force of 2 N, which causes it to accelerate at 8m/s. What is the mass of the volleyball?
0.25kg
A place or object used for comparison to determine whether something is in motion.
Reference point
The middle of good and bad
average
Newton's first law
When a solid object moves through a fluid
Fluid friction
A 12-N net force acts on a 4-kg jug of water. What is the resulting acceleration of the jug?
3N of force
An object is the combination of all the forces acting on the object
Net force
A letter or symbol that represents a number that can change
Variable
Mass times acceleration
Newton's second law
When an object is resting on a surface.
Static Friction
When two solid surfaces slide across each other.
Sliding Friction
A constant force that two surfaces exert on each other when they rub against each other
Friction
The angle of a line on a graph
Slope
Obtain something from a source
derived
A measure of the force of gravity on an object.
Weight
Net force= mass times what?
Acceleration
What are three example of non contact forces
Gravity, magnetic, and electrical forces
The speed at which an object travels in a given direction
Velocity
In order for forces to balance they must act on the same object
Balance forces
To connect something with something else with one mind.
Associate
When people realized that gravity acts everywhere in the universe.
Universal Gravitation