please help me im stuck on this last one !!
.A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to come to a stop?
A.kinectic energy is transformed into thermal energy.
B.electrical energy is transformed into potential energy.
C.potential energy is transformed into kinectic energy.
D.mechanical energy is transformed into chemical energy.
friction between tires and the road and air drag and friction in the wheel bearings stopped her.
Friction turns kinetic energy into heat.
what answer choice is that??
Now really read !!!
" Friction turns kinetic energy into heat. "
To determine the most likely cause of the car coming to a stop, let's analyze the options provided:
A. Kinetic energy is transformed into thermal energy
Kinetic energy is the energy associated with motion. If the car is coming to a stop, it means the kinetic energy is decreasing. However, the question states that the car driver does not press the brake pedal, so there is no external force acting on the car to convert its kinetic energy into thermal energy. Therefore, option A is not the most likely cause.
B. Electrical energy is transformed into potential energy
Electrical energy is the energy associated with the flow of electric charge. For a car to come to a stop, there needs to be a conversion of kinetic energy into another form of energy. Electrical energy transforming into potential energy would not directly cause the car to stop. Therefore, option B is unlikely to be the cause.
C. Potential energy is transformed into kinetic energy
Potential energy is the energy stored in an object due to its position or state. When the car accelerates to a speed of 35 mph and then takes its foot off the gas pedal, the potential energy of the car decreases. As the car moves, this potential energy is converted into kinetic energy, which is the energy associated with motion. With the lack of an external force, this is the most likely cause for the car to eventually roll to a stop. Therefore, option C is the most likely cause.
D. Mechanical energy is transformed into chemical energy
Mechanical energy is the sum of an object's potential and kinetic energy. Chemical energy is the energy stored in the bonds between atoms and molecules. There is no indication in the question that any chemical processes are occurring in the car, so option D is not a likely cause.
Based on the analysis, the most likely cause for the car to come to a stop is C. Potential energy is transformed into kinetic energy.