Does a car's kinetic energy change with speed? Does the kinetic energy of a car change more when it speeds up from 10 to 15 m/s or from 15 to 20 m/s? Explain

3 Answers

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ask996 | High School Teacher | (Level 1) Senior Educator

Posted on

Yes, a car's kinetic energy changes with the speed.  Think about it. If a car is going faster, it has more potential to do damage.  Cars going slower have less potential energy than cars going faster.

I have to disagree. Kinetic energy is the energy an object possesses and relates to that object's ability to apply work on anything with which it collides. Potential energy is the relates to the a set of forces (wind) that act on a body based on the body's positioning. As litteacher indicated in the answer, the wind affect on the car is "potential energy."

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litteacher8 | High School Teacher | (Level 3) Distinguished Educator

Posted on

Yes, a car's kinetic energy changes with the speed.  Think about it. If a car is going faster, it has more potential to do damage.  Cars going slower have less potential energy than cars going faster.

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memememe123's profile pic

memememe123 | Student, College Freshman | eNotes Newbie

Posted on

Yes, a car's kinetic energy changes with the speed.  Think about it. If a car is going faster, it has more potential to do damage.  Cars going slower have less potential energy than cars going faster.

Thank you :)