measurement
how many mm are in a meter
1000
What is the difference between weight and mass?
Mass is the amount of matter. weight is how hard gravity pulls on it
what is a constraint? give an example
a limitation. time or money....
What is the normal force
The force perpendicular to the surface an object rests on.
what is acceleration
the speed at which your speed changes
what are the units for force
newtons
what does CER stand for
Claim evidence reasoning.
what is criteria (in the engineering context)
A measure of success, or a requirement to be considered successful.
with the momentum equation p=mv Where p is momentum in kg(m/s), m is mass in kg, v is velocity in m/s
what is the momentum of a 20kg ball going 20m/s
400 kgx m/s
what is static friction, can it change?
it applies to objects at rest on a surface, yes it changes.
what are the common SI units for velocity, acceleration?
m/s, m/s2
What tools do you use to analyze data
tables, graphs, charts, numerical analysis, (software sometimes)
what is a failure point?
the factor or thing that does not let the criteria be met
using F=ma Where F is net force in Newtons, m is mass in kg, a is acceleration in m/s²
If a balloon car has anet force of 0.25N and has a mass of 0.5kg what is its acceleration?
.5m/s2
what is centripetal force?
In circular motion the force perpendicular to the direction of motion.
How would i measure the volume of a mini Yoda, which instrument(s) would you use ?
water displacement with an overflow container and graduated cylinder or one container inside another with a graduated cylinder
if i have an experiment with plants all growing under different colors of light, what would be the two most important variables to control?
Air flow and water, nutrients
What is an iteration? how many would be typical in a large engineering project
a version, a build, 10-100 would be typical
What does it mean when forces are in equilibrium?
they balance
if I jump out of an airplane, how fast am i gong after 2s.
19.6 m/s
to measure real accurate mass and types of mass what high end instrument is used?
Mass spectrometer
On which axis do we typically graph time on
x axis
what does an acceleration distance vs time graph look like
curved upwards
Describe newtons first law
The law of inertia. objects at rest stay at rest unless acted upon by a force. Objects in motion stay in motion unless acted upon by a force.
How does Newtons 3rd law apply to the Balloon car
The force of the air pressure exiting the balloon causes the reaction force of thrust horizontally