motion along a curve?
2007-02-17 16:00:01 · 2 answers · asked by Jaime 2 in Science & Mathematics ➔ Astronomy & Space
According to Newton's first law of motion, if no external force is present, then a stationary object would remain stationary and a moving object will keep moving in a constant velocity in a straigh line. So motion along a straight line implies there is no force acting on the body. But if the body is movig in a curve then we can say that there must be some external force acting on it. For example, planets move in an eccliptical orbit because the sun exerts gravitational pull on them. So the planets move along a curve ( ellipse ) reather than a straight line.
Hope this was helpful.
2007-02-20 21:52:42 · answer #1 · answered by rhapsody 4 · 0⤊ 0⤋
That there must be another force acting on the object in motion to produce the curve.
2007-02-18 00:08:07 · answer #2 · answered by a simple man 6 · 2⤊ 0⤋