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Swimming and some speed sports.
The force required to overcome friction = the coefficient of friction x the reactive force (as in, the force the object exerts on the surface you want to move it over). So, you have to know the coefficient of friction, and simply times it by 600 in this case to know the force required. Oddly, once friction has been overcome, the required force drops slightly to keep it moving.
On a car, friction is useful on the tyres and brakes. It is not required for the parts that rotate.
Newton's 3 laws...
Some driving force is required.
Tiddlywinks
Swimming and some speed sports.
yes
action and reaction, the ball moves with force, it stops with friction .
The force required to overcome friction = the coefficient of friction x the reactive force (as in, the force the object exerts on the surface you want to move it over). So, you have to know the coefficient of friction, and simply times it by 600 in this case to know the force required. Oddly, once friction has been overcome, the required force drops slightly to keep it moving.
Ice skating does not require any friction because the skater needs to glide on the ice and if there was any friction on ice the skater would have trouble to skate smoothly on the ice. That is why ice skating does not require any friction at all from my perspective.
On a car, friction is useful on the tyres and brakes. It is not required for the parts that rotate.
track. anything that has to do with running. you use friction when running. but as for the 5 without use of friction then i have no idea
This is because it slows you down and it means that you will get hot feet
Friction is the resistance to movement of an object pressing/resting/moving on a surface. It's not intuitively obvious but the standing still friction and moving friction are different. Assume you have a block of wood resting on a tabletop. The amount of force required to make the block begin to move (static friction) is greater than the force required to keep it moving (kinetic friction) after it has begun to move.
Newton's 3 laws...
Bowling, curling, and tennis