static
static
that is true
Static Friction
You must overcome static friction.
Sticky friction.
Friction. Specifically, static friction. After the object begins to move, it will still be necessary to overcome rolling or sliding friction to keep it in motion.
Friction is a force that acts on all touching objects. Friction is caused by the roughness of on object. Even if an object feels smooth to the touch, it will never be perfectly smooth because there will always be microscopically small peaks and valleys at the atomic level. What friction does is essentially try to prevent an object from moving or continue moving. There are two types of friction, static and kinetic. Static friction must be overcome to get something moving, kinetic friction must be overcome to keep something moving. They both have values that depend on the two surfaces touching and are referred to as the coefficient of their respective term. Note: the coefficient of static friction is always higher than that of kinetic for the same two materials.
When gravity and friction overcome the ability of the moving water to move them.
When an object is at rest, static friction is acting on it. But once it is overcome, the object moves comparatively easier due to the fact that the moving objects face kinetic friction which is always less than static friction. +++ It's not the friction you have to overcome, but its inertia, proportional to its mass. Think of an astronaut servicing something on the outside of the International Space Station. There is no friction acting on him, he is weightless and both he and spaceship are moving together through space at great speed; , but he still has mass so to move himself along the hull he still needs to push against it to overcome his inertia.
Why do you pull the sneaker at a slow speed for stopping friction?
Friction
no. No because we would need to overcome friction when moving, causing us to move slower.