Post a New Question


posted by .

a car of mass 1360 kg descends from a hill of height 86 m at a constant speed of 20 km/h. assuming that all the potential/kinetic energy of the car goes into heat in the brakes, find the rise in temperature of the brakes (use the heat capacity (C) of the brakes to be 16kJ/C and ignore any heat losses to the surroundings

  • science -

    Q=c*delta T


    q=potential energy
    potential energy=mgh
    Q/c = delta T
    Delta T= 73.1 K

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question