Fact 1: Friction causes the temperature of an object to increase.

Fact 2: Brakes work because friction acts against slip.

Given the two facts above, answer the question "Braking would cause what to an object's temperature?" with the following options: 
- it would decrease
 - it would stay the same
 - flow of electrons
 - it would increase
 - Water expanding
 - heat energy
 - it would go to infinity
 - Electrical energy


 

    it would increase     