momentum + energy

momentum

mass*velocity

standard unit of momentum

kg*m/s

SI unit for velocity

m/s

definition of impulse

change in momentum

impulse

F*t(force*time), m*deltav (mass* change in velocity)

law of conservation of momentum

the total momentum of two objects will remain the same before and after a collision

momentum must have

a direction!

intertia is…

basically mass

units of impulse

N*s

momentum of a system is only conserved when…

there is no net external force acting on a system

work is…

the transfer of energy

energy is…

the ability to do work

SI unit of energy

Joules

SI unit of work

Joules

energy is only visible when…

work is done

potential energy (PE) is…

stored energy

GPE depends on…

mass + height

weight is…

mass*gravity

meight is measured in…

newtons

kinetic energy (KE) depends on…

mass + velocity, but velocity has a greater effect

W

work

w

weight

law of conservation of energy

energy cannot be created or destroyed, only converted

work

force*distance

power

work/time

power is measured in…

watts

watt is…

Joule/second, or kg*m²*s-³

Hooke’s Law

F=k*deltax

SI unit for spring constant

newtons/meter

spring constant is…

how stiff or stretchy the spring is

force exerted by a spring is called a….

restoring force