百度试题 结果1 题目Friction is a force that opposes ___. A. motion B. rest C. force D. gravity 相关知识点: 试题来源: 解析 A。摩擦力是一种阻碍运动的力。反馈 收藏
A. two objects not in contact B. two surfaces in contact C. one surface and one object D. one object and the air 相关知识点: 试题来源: 解析 B。解析:文章中提到“It is the force that opposes the motion between two surfaces in contact.”,即摩擦力是两个接触表面之间的反作用力。反馈...
Friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. Think of it as the 'stickiness' between things when they rub against each other. Let’s say you’re trying to slide a book to a friend seated across the table. The table's surf...
There are two main types of friction.Kinetic frictionis a frictional force that opposes motion for an object which is sliding along another surface.Static friction, on the other hand, acts on an object that isn't sliding. If you push on your textbook, but not so hard that it slides along...
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
a对我唠叨 Talks incessantly to me[translate] aan overview of the options 选择概要[translate] aThe friction in this case is an active force for the bucket motion 摩擦在这种情况下是活跃力量为桶行动[translate]
friction,forcethat resists the sliding or rolling of onesolidobject over another. Frictional forces, such as the traction needed to walk without slipping, may bebeneficial, but they also present a great measure of opposition tomotion. About 20 percent of the enginepowerofautomobilesis consumed in...
*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...
adhesive friction,traction,grip- the friction between a body and the surface on which it moves (as between an automobile tire and the road) resistance- any mechanical force that tends to retard or oppose motion 3.friction- effort expended in moving one object over another with pressure ...
Sara sensed that there had beenfrictionbetween her children... 萨拉感觉到她的孩子之间有过争执。 柯林斯高阶英语词典 The plan is likely only to aggravate ethnicfrictions. 这一方案很有可能只会加剧种族冲突。 柯林斯高阶英语词典 The pistons are graphite-coated to reducefriction. ...