if the acceleration of an object is zero, are no forces acting on it? Explain.?

Answer 1

No (as in, the statement is incorrect). If an object is not accelerating, there is no NET force acting on it, but there may still be forces acting in opposition. E.g., when I have a coffee cup sitting on a table, it is not accelerating (ignoring its rotation along with the earth, for a moment), but there are two counteracting forces - the normal force of the table pushing up on it, and the downward pull of gravity.

Answer 2

f = sum(all forces) = ma; where f is the "net" force found by summing all forces on the body of mass m, which results in acceleration a because f/m = a. If the net force f = 0, then it follows that f/m = 0/m = 0 = a.

As you sit there in your chair reading this, there are two major forces acting on you: the force of gravity (your weight) and the counter acting force of the chair seat pushing upward on your butt. But you are not accelerating are you? That's because f = sum(all forces) = W - F = 0 = ma; so that a = 0. In your case, W your weight is offset by the equal, but opposite force (F) of your chair seat. That is, W = F.

Answer 3

newton's third law: Interaction, there is two force acting on an object while at rest. Example book on a table, there is an upward force produce by the table and downward force which is the gravity. hope it helps :)

Answer 4

it dsnt mean that if acceleration is zero,no forces are acting on it.It means that wahtever forces act on it are equally balanced.All the forces are counter balanced.It might even possible that no forc is acting.But the first case is also possible.According to newtons second law,Net Force=mass*aceleration.so ,if aceeleration is 0,it means net force acting is 0 and not necessarily that thr is no force

Answer 5

yes or 2 forces are acting on it in opposite direction with the same speed. hope that helps

Answer 6

Exactly, no net force. Gravity and Normal cancel out.

Answer 7

gravity.