重D好..輕D好

衝力應是兩個都一樣　　因為會由於用力＝反作用力的原理所影響
但是，由如不知面積的不同，風阻也有所不同，只要知道那兩樣東西的面積
便可以計算出那個會拋得最遠。
其實你可能會諗，唔係應該重既野應該會快ｄ落地嫁咩？
但係，有人係一個真空管子內，進行了一個實驗：
把一根羽毛和一塊鐵　將它倒轉　是同時間落地的
但是如果在有空氣的管子內，會係鐵落得快ｄ
同樣道理：當物件掉下時　會有作用力　但同時也有反作用力　所以是沒有分別的
只是氣流阻住了．．．．．．．

2006-12-29 18:28:52 補充：
答得好

衝力,撞擊力...電視
那個會拋最遠...more or less the same

in these case the force acting on them are inertial force.
It depends on both the acceleration and mass.

The equation, like the Newton's second law, is F=-MA.
Here F is the inertial force acting on the object, M is the mass of the object,
A is the acceleration of the frame( i.e. (0KM/hr-150KM/hr)/time used for breaking).

Be reminded that this A is negative as it's a deceleration,
but the force is positive because of the negative sign in the equation.

By the second law, f=Ma, where f is the force acting on the object,
a is the aceration of the object,
we get that a=-A, and it's independent of M.

Because v=at, t is the time for breaking,
both of the 電視 and the 電話 have the same velocity.

As a result, the distance travelled by them will be the same.
As they are very heavy relative to the same volume of air,
so air resistance can be neglected.

電視衝力,撞擊力比較大;家庭電話最遠!

家庭電話拋最遠