Which of the following are true of the effect of friction on the Hot Wheels car at the?

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Sade

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Which of the following are true of the effect of friction on the Hot Wheels car at the horizontal bottom part of the ramp.
1.Friction makes the potential energy increase
2.Friction makes the kinetic energy increase
3.Friction makes the kinetic energy decrease
4.Friction makes the TOTAL energy decrease
5.Friction leaves the TOTAL energy constant
 
3.) is the answer.

According to the third law of thermodynamics the the total energy of the system must remain the same but answer 3 is correct.
 
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