Kinematics
Positive and Negative.
What are directions?
Object represented by a dot and arrows acting on it.
What is a Force Diagram?
The amount of total energy doesn't change.
What is conservation of energy?
Momentum of a system remains the same before and after a collision.
What is conservation of momentum?
What is a Joule?
This type of motion can be described using the following equation:
v = x/t
What is constant velocity?
The force that has to be on all force diagrams.
What is weight (force of gravity)?
Used to describe a spring is stretched or compressed.
What is elastic energy?
Momentum and Kinetic energy are both conserved.
What is an elastic collision?
kgm/s/s
What is a Newton?
The displacement of an object on a velocity graph.
What is the area of the velocity-time graph?
All forces balance out (the sum is equal to zero).
What is equilibrium?
Noted with the units of Watts, this describes the amount of energy used in an amount of time.
What is power?
This quantity can be determined by finding the area of a force-time graph.
What is Impulse (change in momentum)?
What is a Watt?
The natural acceleration of the object is -10 m/s/s.
What is freefall?
When it's not negligible, this force must be determined to see if an object moves.
What is static friction?
An object is forced to move a distance. (Change in energy)
What is work?
Two objects hit and stick together.
What is an inelastic collision?
What is a pascal?
The vertical velocity of a projectile object is 0 m/s.
What is the apex?
Inward point force when the object moves in a circle.
What is centripetal force?
Energy that cannot be retrieved easily and is most often considered lost.
In car crashes by engineering vehicles to increasing this value we are able to keep people safe.
What is time of impact?
1/s
What is a Hertz?