Question

Dynamic friction is always ____ static friction * greater than less than equal to none of the above

Answer 1

Answer:

Answer: less than

Explanation:

Dynamic friction (also called kinetic friction) is always less than static friction.

Answer: less than

Answer 2

Answer: Dynamic friction is always less static friction.

Explanation:

Dynamic friction is the opposing force that comes into play when a body is in motion. On the other hand, static friction comes into play when a body is at rest.

Static friction is always greater as it is the force that has to restrict the body from moving, whereas dynamic friction doesn't have to retain the body.

In other words, the energy required to keep a body at rest is greater than the energy required to keep a body in motion.