A surface that is too smooth can have insufficient friction for your feet to gain traction. A rocky surface, on the other hand, can be hard to navigate because of the uneven terrain.
Pavers are used during construction when the cement is wet and they need the pavers to flatten out the surface so it is smooth for cars, bikes, or even people to walk on. They come in very handy when its time to get to places.
A flat surface generally refers to a horizontal surface and is referred to as the plane.
Excercise isn't necesarily the thing that will change a metabolism, which is actually very difficult if not impossible to do.
A 2000 metres walk.
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it is because smooth surfaces have less friction so when friction is less it is hard to walk
Friction is needed for stability in movement.
there is no friction in between the floor and your feet especially when you have socks on.
Well you do make sense..............well this because when you are to walk on a smooth road ,you fall.That's because the friction is less beetween your foot and road and thus there is no grip.
There is more friction, this ensures your feet do not slide
Saturn doesn't have a hard surface. In fact there is no surface. Saturn is not mountainous but they have said the moons are. You cant walk on Saturn's surface because it is not solid. Most pictures have shown that Saturn is a rocky planet.
Mercury is sometimes referred to as the "rocky midget" because it is the smallest and innermost planet in our solar system, and it has a rocky, cratered surface.
Because it's slippy and you would just fall over
Depends on the surface of your sole on the shoe. Polished leather or rough rubber-sole! Leather: You slip. Rubber brobably make marks on the surface
Friction - the force that makes it difficult for one object to slide along the surface of another
Crag walk
When you walk on sand two thing happen that makes it hard to walk 1. the ground is uneven making you feet shift and slip 2. sand gets on you foot causing resistance. hope this helps!