2007-11-12 03:29:50 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Stopping a car :)
2007-11-12 06:23:04 · answer #1 · answered by Sandy ♥ - semi retired :) 7 · 0⤊ 0⤋
Important uses
In some situations, friction is very important and beneficial. There are many things that you could not do without the force of friction.
Walking
You could not walk without the friction between your shoes and the ground. As you try to step forward, you push your foot backward. Friction holds your shoe to the ground, allowing you to walk. Consider how difficult it is to walk on slippery ice, where there is little friction.
Bear did not heed warning sign
Bear did not heed warning sign
Writing
Writing with a pencil requires friction. You could not hold a pencil in your hand without friction. It would slip out when you tried to hold it to write. The graphite pencil led would not make a mark on the paper without friction.
A pencil eraser uses friction to rub off mistakes written in pencil lead. Rubbing the eraser on the lead wears out the eraser due to friction, while the particles worn off gather up the pencil lead from the paper.
Driving car
Your car would not start moving if it wasn't for the friction of the tires against the street. With no friction, the tires would just spin. Likewise, you could not stop without the friction of the brakes and the tires.
2007-11-12 11:35:33 · answer #2 · answered by Aditya 2 · 3⤊ 0⤋
In some ways friction is very useful for instance,
Starting a fire.
Hope this helps :)
2007-11-12 12:05:24 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Saving earth from Meteors. They burn up in the atmosphere due to friction
2007-11-14 10:45:37 · answer #4 · answered by E=MCPUNK 3 · 0⤊ 0⤋
When you're careering down a hill on a bike and the brakes don't work - you'll be grateful for the rubber soles on your shoes, especially when the road ends at a t-junction and there's a tall cliff after it!!
2007-11-12 12:12:37 · answer #5 · answered by M-GX 2 · 0⤊ 0⤋
Any situation that requires a change of direction while moving (cars' tires, people, bicycles), and any situation in which one would like something to stay still (perhaps things in a bedroom or house, cars again, you).
2007-11-12 11:44:32 · answer #6 · answered by Mercury 4 · 0⤊ 0⤋
Slowing down a spacecraft entering the atmosphere is an instance
2007-11-12 11:54:28 · answer #7 · answered by SPACEGUY 7 · 0⤊ 0⤋
Using the brakes on your car so you dont slam into the back of the person in front of you and kill yourself.
2007-11-12 11:34:52 · answer #8 · answered by Joe C. 3 · 1⤊ 0⤋
Accelerating a car.
2007-11-12 12:30:13 · answer #9 · answered by Mark 6 · 0⤊ 0⤋
Striking a match.
Keeping glasses on your head.
Keeping my monitor from slowly sliding off my desk.
Keeping my wedding band on my finger (darnit... *jk*).
2007-11-12 13:05:31 · answer #10 · answered by Anonymous · 0⤊ 0⤋