What is kinetic energy?
1. The energy of radiation
2. Thermal energy
3. The energy of motion
4. Stored energy
3. The energy of motion
The correct answer is:
3. The energy of motion
The correct answer is option 3: The energy of motion. Kinetic energy refers to the energy possessed by an object due to its motion. It is determined by the mass and velocity of an object. The formula for calculating kinetic energy is 0.5 times the mass of the object times the square of its velocity (KE=0.5mv^2).
To determine the correct answer, you can eliminate options 1, 2, and 4.
Option 1, "The energy of radiation," refers to electromagnetic energy that travels in the form of waves or particles, such as light or X-rays. It is not related to kinetic energy.
Option 2, "Thermal energy," refers to the energy associated with the temperature of an object. It is related to the random motion of particles within an object, not the overall motion of an object.
Option 4, "Stored energy," refers to potential energy, which is energy that an object possesses due to its position or condition, such as gravitational potential energy or elastic potential energy. It is not the same as kinetic energy, which is associated with the motion of an object.
Therefore, option 3, "The energy of motion," is the correct answer.