Question

In which of the following cases, the net forces are unbalanced.
1.An object floating in air
2.A cork floating on the surface of water
3.A ball freely falling from a certain height.
4.A kite skillfully held stationary in the sky

Answer 1

Answer:

If the net forces are unbalanced then the object will undergo acceleration:

Only 3, the freely falling ball, is undergoing acceleration.