Newton's laws 牛顿定理

伴奏方案1

[verse]

First law   第一定理

is about everything has an inertia   是关于任何事物都有惯性

object tends to keep its own motion   物体倾向于保持原有的状态

keeps the same speed and direction 保持同样的速率和方向

direction

[rap]

That means if an object is still   这意味着如果物体静止

it will aways keep in still   它将保持静止

if an object moves   如果它运动

it will always keep in move 将保持运动

unless affected by force,   直到受到力的作用

which came from everything   （力）可能来自任何事物

this is the first law   这个是第一定理

that applies to everything 适用于任何情况

[choir]

Force cause the changes   力带来改变

that affect the motion of everything   改变任何物体的运动

Either from still or moving   不管是运动还是静止

Newton's first law   牛顿第一定理

law of the motion   运动的定理

[verse]

Second law   第二定理

is about the result of the net force   说的是合力

equation of the net forces on the motion   运动物体的合力公式

mass multiplied by acceleration 等于质量乘以加速度

leration

[rap]

this means a higher force will faster accelerate   这意味着更大的力带来更大的加速度

also a higher mass will slower accelerate   更大的质量会有更小的加速度

if no resultant force will not accelerate   没有合力没加速度

unless   affected by force that changes of motion states   除非合力不为0才会有加速度改变运动状态

[choir]

Force causes the changes

that affect the motion of everything

Either from still or moving

Newton's second law

law of the motion

[verse]

Third law   第三定理

is about forces of reaction 说的是反作用力

forces come in pairs with their reaction   力和它们的反作用力成对出现

same magnitude opposite directions   大小相等方向相反

direction

[rap]

This mean the force on you   这意味着我对你的力

is same with yours on me 和你对我的一样

with same in magnitude 大小相同

and reverse direction 方向相反

if in a close system 如果处于封闭系统

with no external force 不受外力

the all internal forces 则内部的力

will cancel themselves all 会相互抵消

[choir]

Force causes the changes

that affect the motion of everything

Either from still or moving

Newton’s third law

law of the motion