1) Energy a) what makes things happen b) What pulls us to earth. 2) Kinetic energy a) the energy of an object b) the energy an object could have 3) potential energy a) the energy an object has b) the energy an object could have

physics

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？