Is it true that object cannot maintain a constant velocity in the outer space if a force is applied on it? Since F=ma, once a force is applied, it will accelerate infinitely (Due to frictionlessness & no gravitorial force) and reach the speed of light.
Probably my explanation is wrong. So, what is my misunderstanding on these concepts?
Newton\'s 1st & 2nd Law
2010-01-21 4:45 am
回答 (3)
2010-01-21 5:18 am
✔ 最佳答案
The equation F = ma is derived from Newtonian mechanical, which is a classical physics principle. It is only applicable when the speed of object is low as compared with the sped of light.When an object accelerates to high speed comarable to the speed of light, relativistic effect comes into play. According to the Special Theory of Relativity, the mass of the object would increase. The increase in mass is much much larger when the speed of the object approaches the speed of light. In theory, the mass becomes infinite at the speed of light. Hence, Special Relativity tells that no mass could reach the speed of light. Only massless objects, like photon, can travel at light speed.
2010-01-31 4:53 am
無最佳解答
2010-01-21 10:07 pm
No friction! No gravitational force! How can you "continuously" apply a force to an object, especially when the object become faster and faster?
收錄日期: 2021-04-29 17:32:48
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