使用方法

碰撞模拟器（恢复系数·动量守恒·自由落体）

抓住小球向左右拖动即可设定它的初速度，松手后就会开始运动。在条件面板中可以切换两球、墙壁、自由落体三种模式。

匀变速直线运动

斜抛运动

摩擦

靠墙杆

滑轮

过山车

动量守恒

碰撞

圆周运动

弹簧振子

单摆

行星运动

匀变速直线运动模拟器 Slope is acceleration, area is displacement You can solve it without the time A negative acceleration is not always a slowdown Falling and throwing upward are one motion

斜抛运动模拟器 Horizontal and vertical move separately What disappears is the time The farthest throw is at 45°

摩擦模拟器 Friction does as it is told It is set by how hard the surface is pressed The angle of slipping does not depend on weight

靠墙杆模拟器 Balanced forces can still topple it The wall is smooth, the floor is rough The more upright, the safer

滑轮模拟器 Add the equations and the tension goes Tension is not the weight It takes weight to get it moving

过山车模拟器 The path makes no difference Heavy in the valley, light on the hill It takes two and a half times the height

动量守恒定律模拟器 Impulse changes momentum They cancel on the inside The second equation is the restitution

碰撞模拟器 The wall carries the momentum off Every bounce multiplies it by e² Infinitely many bounces, and it stops

圆周运动模拟器 Constant speed and still accelerating There is no such force as centripetal force The flatter it lies, the faster it turns

弹簧振子模拟器 Simple harmonic motion is a circle's shadow Velocity and acceleration are shadows too Energy only changes its form

单摆模拟器 A small swing is the same as a spring Height decides the speed In an accelerating train the vertical tilts

行星运动模拟器 The Moon is falling too The nearer in, the faster The period is set by the size of the orbit Fast enough and it never returns