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32 Cards in this Set

  • Front
  • Back
What is Kinematics?
the study of motion without regard to the forces that produce it
What are Dynamics?
the study of motion when forces are considered
How did Aristotle (Greek) Classify Motion?
Violent and Natural
What Idea did Galileo (Italian) come up with?
What is Inertia?
the property of objects to maintain their state of motion or an objects ability to resist motion
How do we measure Inertia?
The amount of material in an object or it's mass
How much is 1kg in pounds?
How many Newtons make a kg?
1kg = 9.8 Newtons
What is Net Force?
The Sum of all the forces acting on an object
A vector quantity means that in order to describe it, we need to tell both its size (magnitude) and its direction Example: force, velocity, acceleration
What is a scalar quantity? Example: time, mass, volume
a quantity that only needs a magnitude (size) to describe it
What is in mechanical equilibrium?
Anything that isn't undergoing a change in motion (no net force)
In 1543 who stated the earth revolved around the sun?
Nicolaus Copernicus
Published 3 laws and based his ideas on Galileo's ideas?
Sir Issac Newton
Newton's 1st law is?
Law of Inertia -- An object remains either at rest or in motion due to its inertia. An outside force must act on the object to change the motion and overcome the object’s inertia.
Newton's 2nd law is?
Acceleration = net force over mass or... The acceleration produced by a net force on an object is directly proportional to the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object
What is Terminal Velocity?
When an object reaches it's max acceleration
Newton's 3rd law is?
For Every Action there is an equal and opposite reaction
What is the law of conservation of momentum?
in the absence of any external force, the momentum of a system remains unchanged
Gravitational Force is equal to?
Gravitational Force = 1 over distance squard
Difference in Pulls on the opposite side of an object can be described as?
1 over distance cubed
Acceleration = Force / Mass
Speed = distance / time
Power = work done / time
Work = Force * Distance
Velocity = distance / time
Gravity = force / mass
Ft = (change)mv or force * time interval = change in momentum
KE = 1/2mv^2
PE = wh
Momentum = mv
wieght = mg