Vocab Part 1
What is a force?
A state of steadiness where no physical changes occur
What is mechanical equilibrium?
An example of a vector quantity
What is force?
The first step of the scientific method
What is to ask a question?
The most basic science... Covers motion, forces, energy, matter, heat, sound, light and the composition of atoms
What is physics?
The combination of all forces acting on an object
What is net force?
A rule that states that whenever the net force on an object is zero, the object is said to be in mechanical equilibrium... Also expressed as (the sum of) forces = 0
What is the equilibrium rule?
An example of a scalar quantity
What is time, area or volume?
The second step of the scientific method
What is to formulate a hypothesis?
This other academic subject is considered the language of science because when scientific findings are expressed in this way, they're easier to verify or disprove
What is mathematics?
An arrow that represents the magnitude and direction of a quantity
What is a vector?
The upward force that balances the weight of an object on a surface
What is support force?
The net force on an object at rest...
The third step of the scientific method
What is to design and conduct an experiment?
If a scientist finds evidence that contradicts a hypothesis, law or principle, then the hypothesis, law or principle must be...
What is changed or abandoned?
A quantity that has both magnitude and direction
What is a vector quantity?
Objects at rest are said to be in...
What is static equilibrium?
A 200 lb person is hanging on a pull-up bar at rest... This is the amount of weight supported by each arm...
What is 100 lbs?
The fourth step of the scientific method
What is to analyze your results?
A hypothesis is scientific if...
There is a test for proving it wrong
A quantity with only magnitude (and no direction)
What is a scalar quantity?
Objects moving at constant speed in a straight-line path are said to be in...
What is dynamic equilibrium?
These two forces act on a scale when someone steps onto it...
Weight of the person pushing down on the scale and the equal support force of the floor pushing back up against the scale
The fifth step of the scientific method
What is to draw a conclusion?
Progress today differs from progress thousands of years ago because it is...