Friction is the force that opposes the motion when two surfaces in contact move or tend to move with respect to each other. It always acts opposite to the direction of motion, thus it is an opposing force. Answer and Explanation:1
The friction converts the kinetic energy of the moving bicycle into heat energy, which is why you might feel the rims getting warmer after braking. #3 Rolling friction Rolling friction is the force that resists the motion of a round object (like a wheel or a ball) as it rolls on a ...
The simple fact shows that the more of the force of friction is got rid of,the farther will the ball travel,and we are led to infer that,if all the impeding forces of gravitation and resistance could be removed,there is no reason why the ball,once in motion,should ever stop. 相关知识...
1.The rubbing of one object or surface against another. 2.Conflict, as between persons having dissimilar ideas or interests; clash. 3.PhysicsA force that resists the relative motion or tendency to such motion of two bodies or substances in contact. ...
of the most useful and most troublesome forces we deal with every day... a force that has tremendous application in transportation, machinery, and all parts of mechanics, yet we spend tremendous amounts of money each day fighting it. This force, friction, is a force that opposes motion. ...
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正在翻译,请等待...[translate] aThe force needed to set a body in motion against friction is more than that needed to maintain it in motion at constant speed. 力量在行动比维护那需要需要设置一个身体反对摩擦是更多它在行动以匀速。[translate]...
Friction is aforce, theresistance of motion when one object rubs against another. Whenever two objects rub against each other, they cause friction. Friction works against the motion and acts in the opposite direction. Theamount of frictiondepends on the materials from which the two surfaces are ...
is no such thing as a(7)___(complete) frictionless surface.Friction,in terms of how it (8)___ (use) on the earth,can be very (9)___(help) in preventing motion.For example,it helps clean clothes in the washer.Also,it is the force of friction that allows brake pads(垫片)(10...
*Static..prevents objects sliding WHAT IS FRICTION? (P.49) Friction is a force that resists the motion of two surfaces that are touching. When a moving object comes in contact with another object, friction is the opposing force that slows or stops the moving object. *Static..prevents object...