What forces are acting on an object in free fall? A dodge challenger SRT Demon can accelerate from rest to a speed of 26.8 m/s in 2.30 seconds. a) What is the average acceleration of the car? b) How far would the car travel in this time?
concern.Takinganapcanberefreshingandenjoyable,”shesays.“Thekeyis,areyoumissing outonthingsthatyouenjoybecauseyouaretoosleepytostayawake—thatcanindicatea problem—ordoesthenaphelpyougetmoreoutofyourday?” “Takingabriefnapcanfeelrestorative,reducestress,andimprovefocus.Earlyafternoonisa goodtimetonap,asthis...
A. The movement of the planets. B. The fall of an apple. C. The study of celestial bodies. D. The discovery of the gravitational constant. 相关知识点: 试题来源: 解析 B。解析:文章中明确提到 Newton was inspired by the fall of an apple. 牛顿被苹果落地所启发,从而思考物体之间的作用力。
B. Watching a movie. C. An apple falling on his head. D. Talking to a friend. 相关知识点: 试题来源: 解析 C。解析:One day, while sitting under an apple tree, an apple fell on his head. This simple event led him to think deeply about the forces acting on objects.反馈 收藏 ...
百度试题 结果1 题目5 The diagram below shows 5 forces acting on a block.2N3N6N7N5N What is the magnitude of the resultant force acting on the block? C A 1.0 N B 5.0N C 6.0N D 23N 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
百度试题 结果1 题目What are the four fundamental forces acting on an aircraft in flight?相关知识点: 试题来源: 解析 答案:Lift, Drag, Thrust, and Weight.反馈 收藏
So I have to draw the rails and wheels and write the forces acting between the two? All this in the same drawing looking at the train engine from the rear? For the free body diagram, concentrate on the engine. All you are concerned with is the forces acting on the engine. Y...
7 The diagram shows three forces acting on a block. What is the resultant force?3N4N3N What is the resultant force? B A 2 N to the left B 2 N to the right C 4 N to the left D 6 N to the right 相关知识点: 试题来源: 解析 B ...
Friction is the force that opposes the relative motion or tendency to such motion of two bodies in contact. If we try to push a block of wood across a table, there are two opposing forces that act: the force associated with the push, and a force that is associated with the friction wh...
FAQ: What are the forces and torques acting on the masses and pulley in this system? What is a pulley? A pulley is a simple machine that is used to lift or move heavy objects. It consists of a wheel with a grooved rim and a rope or cable that runs along the groov...