结果1 题目 An object s dropped from a high building. The distance, d metres,that the object hasfallen, r seconds after it is released, is given by the formula d = 4.912, 0≤t≤3 .Find the distance fallen during the first second. 相关知识点: 试题来源: 解析 m6* 反馈 收藏 ...
When an object is dropped from a height, it falls down due to ___. A. gravity B. magnetism C. electricity D. pressure 相关知识点: 试题来源: 解析 A。物体从高处落下是因为重力。“gravity”是重力的意思。“magnetism”是磁力;“electricity”是电力;“pressure”是压力。反馈 收藏 ...
An obiect is dropped from the top of a building that is 144 ft high.The function given by h(r)=-16r+144 relates the height h(r)of the object (in feet)tothe time t in seconds after it is dropped.Find h(O)and interpret the meaning of the function value in the context of thispr...
A。解析:句子的主语the object和drop之间是被动关系,即物体是被扔下的,所以要用过去分词Dropped作状语。B选项Dropping是现在分词,表示主动关系,物体不能自己主动掉落这个动作,所以不符合。C选项To drop是不定式,一般表示目的或者将来的动作,这里不适合。D选项Having dropped是现在分词的完成式,也是表示主动关系,不符合逻...
What is the velocity of an object dropped from a height of 220 m when it hits the ground?Motion in Free-fall:The equations of motion in free-fall that we are going to use in this particular problem for the required velocity of the object are shown below: ...
An object is dropped from the top of a100-m-high tower. Its height above the ground aftertsec..is100-4.9t2m.How fast is it falling2secafter it is dropped. Show that the liney=mx+bis its own tangent line at any point(x...
from Chapter 14/ Lesson 11 113K What is average velocity? Learn the formula and methods to calculate the average velocity of an object. Understand the application of the formula with examples. Related to this Question An object travels at a uniform ve...
The moon has mass Msand radius R.A small object is dropped from a distance of 3R from the moon's center.The object's impact speed when it strikes the surface of the moon is equal to genghaoxia KGM/R for k= A 1/3 B 2/3 C 3/4 D 4/3...
Called when one or more items are dropped into the target hierarchy or hierarchy window when the mouse button is released. C++/WinRT 复制 int Drop(Microsoft::VisualStudio::OLE::Interop::IDataObject const & pDataObject, unsigned int grfKeyState, unsigned int itemid, [Runtime::Inter...
A falling car is another example because the front crumples from the impact. Assuming that it crumples in 50 centimeters, which is 0.5 meters, the mass of the car is 2,000 kg, and it is dropped from a height of 10 meters, the following example shows how to complete the calculation. ...