A toy car on a string is pulled across a table horizontally. The string is at an angle of 30°. Which is the correct free-body diagram for this situation?

Aballet student who learns with the of his instructor is demonstrating learning.

How can you increase the strength of an electromagnet?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.