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Forces, Newton's Laws of Motion, and Energy/Work (Energy (Types:…
Forces, Newton's
Laws of Motion, and Energy/Work
Newton's Second Law of Motion
What it says
Acceleration of object = net force acting on object / Mass of object
More net = greater acceleration
More mass = less acceleration
acceleration always is same direction as net force
N/kg = m/s^^2
Deceleration = net force acts opposite to object's direction
Formula
F = M * A
Force = Mass*Acceleration
Newton's First Law of Motion
What it says
object will not change form if net force = 0
Also called "Law of Inertia"
Inertia doesn't let a change in motion (tries not to)
object will only move if force is exerted
Newton's Third Law of Motion
What it says
Every action has equal reaction
Energy
What is it?
the ability to do work
Types:
Kinetic Energy
Motion energy
depends upon
moving objects mass and speed
Formula
Kinetic Energy = 1/2 X m X v**2
Mass in kg
V is speed
Potential Energy
Stored energy
energy stored because of object's position or shape
Formula
Potential Energy = m X g X h
Mass in kg
Gravity is 9.8 m/s**2
Height in meters
Mechanical Energy
motion and position of objects
Kinetic and potential energy combined
Formula
Mechanical Energy = KE + PE
KE = Kinetic Energy
PE = Potential Energy
Work
What is it?
the product of force and distance
activity involving effort
Formula
Work = f X d
Force in Newtons
Distance in meters
