Loss in kinetic energy

  1. xto

    xto 5

    What formula should i use to calculate
    the loss in kineti energy during braking and
    the power dissipated as heating in the brake
    do i just use ke=1/2mv^2 and work done =force x distance ?
  2. jcsd
  3. Andrew Mason

    Andrew Mason 6,960
    Science Advisor
    Homework Helper

    Yes. The braking force x stopping distance (assuming constant braking force) is equal to the loss of kinetic energy of the vehicle.

  4. And if it's not constant, you can integrate the dot product of the force vector and the differential x-vector.

    If you want the power of heat generation, you will need to find how much energy is being dissipated (i.e. how much kinetic energy is lost) per unit of time.
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