Question

1. what happens to an object if the forces acting on it are unbalanced?

a) it stays in place
b) it moves at a constant speed
c) its motion changes
d) it disappears

Explanation:

According to Newton's first law of motion, when the forces acting on an object are unbalanced, the object's state of motion changes. An object at rest will start moving, and an object in motion will change its speed or direction.

• Option a: If forces are unbalanced, the object cannot stay in place as there is a net force acting on it.
• Option b: Moving at a constant speed implies zero net force (balanced forces), which is not the case here.
• Option c: Unbalanced forces cause a change in motion (acceleration).
• Option d: There is no physical principle that makes an object disappear due to unbalanced forces.

Answer:

C. Its motion changes