The potential energy is converted to kinetic energy ___ the object falls. A. while B. before C. after D. as 相关知识点: 试题来源: 解析 D。“当物体下落时,势能转化为动能”,as 表示“当……的时候”,符合语境。while 通常表示“在……期间”,强调动作同时进行;before 表示“在……之前”;...
When energy is transformed from potential energy to kinetic energy, what happens to the object? A. It stops moving. B. It moves slower. C. It moves faster. D. It remains at the same speed. 相关知识点: 试题来源: 解析 C。解析:当能量从势能转化为动能时,物体的速度会变快。物体停止运动...
Potential energy, stored energy that depends upon the relative position of various parts of a system. For example, a steel ball has more potential energy raised above the ground than it has after falling to Earth. Learn more about potential energy in thi
Potential energy that is not so obvious as kinetic energy exists in many things. A.许多事物中都包含不如动能明显的势能。B.不如动能明显的势能存在于许多事物中。C.势能虽然不像动能那样明显,但它存在于许多物体之中。D.当势能不像动能那样明显时,便可在许多物体中找到它。
动能和势能Kineticenergyandpotentialenergy上传人:b*** IP属地:天津 上传时间:2022-02-12 格式:DOC 页数:3 大小:306.50KB 积分:22 举报 版权申诉 全文预览已结束 下载本文档 版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领文档简介...
When a ball is thrown in the air, which of the following describes the upwards motion to the point of greatest height:A.Kinetic energy is converted entirely to potential energyB.Potential energy is converted entirely to kinetic energyC.Kinetic energy
Energy is the ability to do work. Objects can have stored, or potential, energy when work has been done (such as raising an object in the air) or by virtue of their position (such as sitting at the top of a hill). Potential energy changes to kinetic energy when the object moves. Ex...
Kinetic Energy Energy can exist in many forms: heat, light, nuclear energy, chemical energy (from food or fuel), stored (potential) energy (such as the energy stored in a compressed spring) and so on. Energy can be transferred from one form to another and can be used to create motion....
The kinetic energy is equal to the maximum amount of work that the ball could do if it were to strike its target and be left standing still, relative to the observer鈥Understanding Energy:Energy, Entropy and Thermodynamics for Everyman
potential energy 势能 kinetic energy 动能 当球抛向高空时、球具有动能、当球向上飞行到顶点时、球的动能就会转化为重力势能、当球向下落时、球的重力势能就会转化为动能、当球刚刚接触地面时、动能就会转化为重力势能、当球接触地面被压扁时、重力势能就会转化为弹性势能、当球从地面弹起的候、弹性势能...