A particle is moved from point X to point Y under a force field. The work done depends only on the initial and final speeds. Which one of the following is correct?
- A. The force is conservative.
- B. The net work equals the change in kinetic energy. ✓
- C. The force is constant.
- D. The velocity must always increase.
Correct Answer: B. The net work equals the change in kinetic energy.
Explanation
According to the work-energy theorem, the net work done on a particle is equal to the change in its kinetic energy, which depends only on the initial and final speeds.
Related questions on Physics
- The commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to
- Which one of the following statements regarding a current-carrying solenoid is <strong>NOT</strong> correct?
- An object is made of two equal parts by volume; one part has density \rho_{0} and the other part has density 2\rho_{0}. What is the aver...
- A pressure cooker cooks food faster by
- Which one of the following wavelengths corresponds to the wavelength of X-rays?