You will need two components that both contain measurable mass to collide/move against each other, which will cause a kinetic energy transfer
We want a lot of friction when we need to slow down or stop objects in motion, like when braking a car or walking on a slippery surface. More friction provides more resistance to movement, helping to prevent sliding or slipping.
Normally you would not want to do so. If there was no friction, you would slip right off the bench onto the ground. You need some friction in order to stay in one place.
NO!You very much need to increase friction between car tires and the road surface in winter. Accumulated snow and ice can already reduce friction there to the point that stopping and steering the car becomes impossible leading to many severe and occasionally fatal accidents.Vehicle brakes also need as much friction as possible to efficiently stop the vehicle when needed.Sandpaper and other abrasives depend on friction to smooth and clean surfaces.etc.
If you were roller-skating you don't need friction because it slows you down. Well you want friction between the wheels and the floor (so you do not slip sideways) but not between the wheel and the axel (thats why you have ball bearings there to reduce rolling friction). If you are ice skating you do not want friction between the blade of your skates and the ice.
if you mean how to: to decrease friction you just need to for example make the two planes as plane as posible, no rough things to go agenst and slow it down, cars need to do just that.not in the ground to weel but weel to the rest of the car exept the engine.so when to do so, is in a car or some thing that need to move. and you dont want to lift it
Wherever you want to go the fastest.
We want a lot of friction when we need to slow down or stop objects in motion, like when braking a car or walking on a slippery surface. More friction provides more resistance to movement, helping to prevent sliding or slipping.
it helps u slow down in a car and go faster
You would need friction between the tires or tracks and the dirt the tractor is sitting. If you have extended legs, you need friction between the pads and the ground. You would want friction in the brakes. A clutch also relies on friction. Technically you could "dig water", but if you are trenching, then one needs friction between the dirt particles. It is also handy to have friction in your seat, steps, and controls.
low friction
You want less friction. Then you will go faster.
Normally you would not want to do so. If there was no friction, you would slip right off the bench onto the ground. You need some friction in order to stay in one place.
If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.If you want it to get away from Earth's gravitational field, the object would need a speed of 11.2 km/sec - obviously not considering energy lost by friction with the atmosphere.
NO!You very much need to increase friction between car tires and the road surface in winter. Accumulated snow and ice can already reduce friction there to the point that stopping and steering the car becomes impossible leading to many severe and occasionally fatal accidents.Vehicle brakes also need as much friction as possible to efficiently stop the vehicle when needed.Sandpaper and other abrasives depend on friction to smooth and clean surfaces.etc.
In the bearings, where you want as little friction as possible.
yes! you need friction for lacrosse so you don't fall
If you were roller-skating you don't need friction because it slows you down. Well you want friction between the wheels and the floor (so you do not slip sideways) but not between the wheel and the axel (thats why you have ball bearings there to reduce rolling friction). If you are ice skating you do not want friction between the blade of your skates and the ice.