1. What is kinetic energy?
- Kinetic energy is the energy an object possesses due to its motion.
2. What factors determine the amount of kinetic energy an object has?
- The mass and velocity of the object determine the amount of kinetic energy it has. The equation for kinetic energy is KE = (1/2)mv^2, where m is the mass of the object and v is its velocity.
3. How does kinetic energy change when the velocity of an object increases?
- Kinetic energy is directly proportional to the square of the velocity. So, if the velocity of an object increases, its kinetic energy will increase exponentially.
4. How does kinetic energy change when the mass of an object increases?
- Kinetic energy is directly proportional to the mass of an object. Therefore, if the mass of an object increases, its kinetic energy will increase as well.
5. What is the relationship between kinetic energy and work?
- The work-energy theorem states that the net work done on an object is equal to the change in its kinetic energy. Therefore, when work is done on an object, its kinetic energy changes.
Predicting changes in kinetic energy quick check
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