1. Feb 24, 2016

### Lim Y K

If a constant force acts on an object, does the acceleration changes or velocity changes?

2. Feb 24, 2016

### A.T.

What does Newton's 2nd Law tell you?

3. Feb 24, 2016

### ztdep

If you put a constant force on a object siting on the ground, it may not move because your force is not big enough.

4. Feb 24, 2016

### Staff: Mentor

What if the net force is positive. What then?

5. Feb 24, 2016

### olgerm

$\vec a = \frac{\vec F}{m}$
according to this formula (Newton´s II law) if sum of all forces (F) is constant and mass m is constant ,then also acceleration a is also constant.

since $v=\int (dt \cdot a(t))=\int (dt \cdot F(t))/m$ if F≠0 then velocity changes.