Question

Whenever you push an object across a frictional surface, it starts out taking a lot of force to push to get the object moving. However, once the object starts moving, it is much easier to keep it moving. What does this tell you about one of the main differences between static and kinetic friction?

a.Static friction only depends on the surface material, while kinetic friction only depends on the motion

b Kinetic and Static friction are the exact same thing

c Static friction and kinetic friction are combined in one at all times, but static friction is just not seen during the motion

d Static Friction is much stronger than kinetic friction, so it takes more force to get an object moving than it does to keep it moving

Answer 1

The answer is A

Step-by-step explanation:

Here's an example. A child is in school taking a test. They have made a mistake on a question, and want to erase it. The eraser is made out of a type of rubber, the rubber has friction, which means the eraser has something that's going to resist movement. Now the child has exerted enough force to get it moving, and it's moving, it won't stop unless the child stops exerting force to keep it moving. Both Newton's 1st and 3rd law explain the action of moving something on a surface with friction.