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Energy and transformation, Members, Captura de pantalla 2021-11-23 000129,…
Energy and transformation
Module 1
Unit systems
fundamental and derived quantities, vector and scalar
Scientific notation
83,000, 000 = 83 x 10 ^6
Unit conversion
Module 2
Motion
The motion is the change with time of the position or orientation of a body
Uniform linear Motion
Uniform linear Motion
Objects are under the influence of velocity
V= (D/t)
Linear Motion with uniform acceleration
Objects are moving under the influence of acceleration
Free fall - Vertical launch
Objects moved only under the influence of gravity
All objects falling near the earth's surface fall with a constant acceleration
Acceleration=gravity
g=a=9.8m/s2
object dropped: v0=0, g=9.8 (positive), y is used instead of x in the kinematic equations
Object thrown downward: v0= not cero (lower)
Object thrown upward: v0=positive, instantaneous velocity at the maximum height is zero, acceleration will be negative (present during all the motion)
Equations:
Projectile motion
Motion occurs both in x and y
No acceleration on x
Components: maximum height, velocity on x, velocity on y
Module 3
Newton's laws
Law of inertia - an object will remain at rest/motion unless there is an external force.
Law of Net Force - F=ma
Law of Action and Reaction - For every action, there is an equal but opposite reaction.
Mass, Weight, and Forces
Mass - quantitative measure of an object
Weight - (mass)(gravity)
Force - push or pull
Normal
Friction
Tension
Weight
Free body diagrams
Drawings of the forces applied
Always draw them before starting to solve a problem
Module 4
Work
Is the energy transfered that happens when an object has motion over a certain distance
Scalar quantity
Work= (F
cos θ)
D
Unit= Joule
Power
Is the amount of energy transfered during a period of time
Scalar quantity
Power= (Work / time)
Unit: Watts
HorsePower
It refers to compare a force to the force of a Horse, commonly used on mechanical equipment
1 HorsePower = 745.7 watts
Also, you can compare you own force with the HorsePower
Following Kleiber´s law. Metabolic rate= (mass ^ 3/4)
Members
Luis Ángel Hernández
César Sánchez
Johanna Castañeda
Karen robles
Ale López
