The force of gravity acts on all __. A. objects B. object C. objective D. objectives 相关知识点: 试题来源: 解析 A。“all”后面接可数名词复数形式,“object”的复数是“objects”。选项 B 是单数形式错误;选项 C 是“客观的”意思错误;选项 D 是“目标”的复数形式错误。
A. their colors B. their shapes C. their masses and the distance between them D. their temperatures 相关知识点: 试题来源: 解析 C。原因:“He discovered that the force of gravity between two objects depends on their masses and the distance between them.”。 反馈...
Vocabulary and Formulas to Calculate the Force of Static Friction on a Non-Moving Object Gravitational Force:The force on the object from gravity. Normal Force:The reactionary force from the plane on the object. Net Force:Thenetforce from gravity on an object from a ramp. ...
Related to Force of gravity:acceleration of gravity grav·i·ta·tion (grăv′ĭ-tā′shən) n. 1.Physics a.The natural phenomenon of attraction between physical objects with mass or energy; the weakest of the four fundamental forces of nature. Also calledgravity. ...
physic物理问题英文6A.calculate the force of gravity on a 65-kg person in the following:a.at the surface of the Earth (R=6400km)b.at twice the Earth's radiusc.at four times the Earth's radiusB.Plot this gravitational force with distance.What pat
The force of gravity on the moon is much weaker than that on the earth. This means that if you weigh 60 kilograms on the earth, you would weigh only about 10 kilograms on the moon. The underlined word "weigh" in the sentence is a/an ___. A. noun B. verb C. adjective D. adver...
Gravity always works on an object, even when you push or pull it. Friction (摩擦力) pulls against the sled opposite of gravity. It slows down the sled’s movement. So why does the sled keep moving? Because the pull of gravity is stronger than the pull of friction. 1. We can ...
Answer to: Calculate the force of gravity on a 1-kg mass at Earth's surface. The mass of Earth is 6.0 x 10^{24} kg and radius is 6.4 x 10^6 m. By...
Newton's Law of Gravitation:When we throw the object in an upward direction then it comes back to the ground because of the force of gravity acting on the object which pulls the object towards the earth. At the same...
increse了的只是velocity...计数时通常假设accerlaration due to gravity=10ms^-2 momentum is conserved if there's no external force act on it(e.g.friction will be a kind of external force) 咩系 force?假设你拉一件物件系个rough ge floor向前 件物件同地面有个friction向后... force...