0
Yes, and no.
.
Friction IS useful to swimmers, because without friction, there would be no viscosity, and without viscosity, when the swimmer jumped in the pool, they would literally fall through the water to the bottom of the pool (just like you fall through air). Worse, without friction, they could not swim - and thus could not use the water to propel themselves upward to the surface. Unless a swimmer's body is buoyant enough, they might rest at the bottom of the pool until they drown. A swimmer could jump from the pool's bottom, and hope their buoyancy lets them reach the side of the pool, or to reach something to hang on to, but they could not swim to safety.
.
Friction is NOT useful to swimmers, because friction causes drag, and drag slows down the swimmer, and drag also forces the swimmer to expend more energy.
What else can I help you with?
Where is friction not useful and how to reduce it?
Friction is not useful to most athletes (i.e swimmers, skiers, etc.) and friction is caused by the little imperfections and textures of objects against each other. You can reduce it by smoothing down one of the surfaces; like putting a very fine, smooth surface, or fabric over the skin of a swimmer to reduce friction.
What is high in friction but is not useful?
Sandpaper is high in friction but is not considered useful in terms of being helpful in a general sense.
Is one way that friction is useful?
stopping cars Friction is useful to start a fire with sticks.
What is an example of not useful friction?
An example of not useful friction is the friction between the tires of a car and the road surface when trying to accelerate. This friction wastes energy in the form of heat and wears down both the tires and the road, without serving a beneficial purpose in this context.
Is friction useful?
Yes, friction is useful because it helps to provide traction for walking and driving, prevents objects from sliding off each other, and allows us to grip objects. However, excessive friction can also lead to wear and tear on surfaces.
Where is friction not useful and how to reduce it?
Friction is not useful to most athletes (i.e swimmers, skiers, etc.) and friction is caused by the little imperfections and textures of objects against each other. You can reduce it by smoothing down one of the surfaces; like putting a very fine, smooth surface, or fabric over the skin of a swimmer to reduce friction.
Does brakes on a bicycle have a lot of friction or not much and is it useful or not useful?
Brakes are meant to have a lot of friction and it's useful.
Is friction useful with computers?
No Friction Runes Computers
When can friction not be useful in a boat?
the friction from pushing the hull through the water is not useful as long as you're travelling.
When is a high friction useful?
It can be useful when a ball is catching
Why are tyres useful friction?
how does friction help car tyres?
What is high in friction but is not useful?
Sandpaper is high in friction but is not considered useful in terms of being helpful in a general sense.
Is one way that friction is useful?
stopping cars Friction is useful to start a fire with sticks.
When Is Friction Useful and When Is Friction Not Useful?
Friction is useful when you are trying to stop a car, but not useful in the pistons of a car's engine (It makes them less efficient).
How friction useful when walking down an icy street?
It is useful
What is useful friction?
there is friction in your cars brake system and without that frictiuon there your car would roll away whenever it was on a hill so this is a good example of when friction is useful.
What part of a bicycle is a useful friction?
The brakes! And the tires (no friction = no traction).
