##### Symbols and Equations

m

mass

measure of the amount of stuff/resistance to change in motion

unit of measure = kilograms (kg)

a = F / m

mass = Force / acceleration

t

time

unit of measure = seconds (s)

F

Force

Force = a push or a pull

unit of measure = Newtons (N)

F = ma

Force = Mass * Acceleration

X

Position

unit of measure = meters (m)

ΔX

change in postion

ΔX = vt

Change in position = velocity * Time

when a = 0

when a varies use average velocity

v

velocity

v = ΔX/t

velocity = change in position / time

∑F

Net force

Sum of all forces

a

acceleration

a = F / m

acceleration = Force / mass

a = S / t

acceleration = Speed / time

a = Δv / t

acceleration = change in velocity / time

g

acceleration of gravity

g = 10 m/s^2

I

Impulse

= change in momentum Δp

I = Ft

Impulse = force*time

E

Energy

W

Work

Change in energy ΔE

W = Fd

Work = force * distance = change in energy

Unit of measure = (J) Joule

J = Nm

joule = Newton*meter

PE

Potential Energy

Mechanical Energy

PE = mgh

potencial energy = mass * gravity * height

KE

Kinetic Energy

Mechanical Energy in motion

KE = .5mv^2

kinetic energy = .5 * mass * velocity^2

P

Power

P = W/t

Power = Work/time

unit of measure = watt (w)

w = J/s

watt = joule/seconds

p

momentum

p = mv

momentum = mass * velocity

s

displacement

(N)

Newton

Unit of measure of Force

(J)

Joule

unit of measure of Work

(m)

meter

(kg)

kilogram

unit of measure of mass

(s)

seconds

unit of measure of time

(w)

watt

unit of measure for Power

Name the equation for distance

ΔX = vt +.5at^2

change in position = (initial velocity * time)+ (.5 * acceleration * time^2

Name the equation for momentum

p = mv

momentum = mass * velocity

Name the equation for mass

a = F / m

mass = Force / acceleration

Name the equation for Force

F = ma

Force = mass * acceleration

Name the equation for change in postion

ΔX = vt

Change in position = velocity * Time

when a = 0

when a varies use average velocity

Name the equation for acceleration

a = F / m

acceleration = Force / mass

a = S / t

acceleration = Speed / time

a = Δv / t

acceleration = change in velocity / time

Name the equation for velocity

v = ΔX/t

velocity = change in position / time

Name the equation for momentum

p = mv

momentum = mass * velocity

Name the equation for Impulse

I = Ft

Impulse = force*time

Name the equation for Kinetic Energy

KE = .5mv^2

kinetic energy = .5 * mass * velocity^2

Name the equation for Work

W = Fd

Work = force * distance = change in energy

or

J = Nm

joule = Newton*meter

Name the equation for momentum

p = mv

momentum = mass * velocity

Name the equation for potential energy

PE = mgh

mass*gravity*height

Name the equation for Power

P = W/t

Power = Work/time

w = J/s

watt = joule/seconds