Question

identify each scenario as having balanced or unbalanced forces. the sum of the forces on an object is zero. the forces on an object cause it to maintain a constant velocity. two forces of the same magnitude (size) act in the same direction on an object. the forces acting on an object the cause the velocity to decrease. the force on an object is equal and opposite to another force acting on an object.

Explanation:

• When the sum of forces on an object is zero, it means the forces are balanced. According to Newton's first law, if the net force is zero, the object will either stay at rest or move with a constant velocity.
• If forces cause an object to maintain a constant velocity, the net force is zero (since acceleration \(a = \frac{v - u}{t}\), and if \(v=u\), \(a = 0\), and \(F=ma = 0\)), so the forces are balanced.
• When two forces of the same magnitude act in the same direction, the net force \(F_{net}=F_1 + F_2

eq0\), so the forces are unbalanced.

• If forces cause the velocity to decrease, there is an acceleration (\(a=\frac{v - u}{t}\), \(v

eq0\), so the forces are unbalanced.

• If one force is equal and opposite to another force on an object, \(F_{net}=F_1+(-F_1)=0\), so the forces are balanced.

Answer:

1. Balanced forces
2. Balanced forces
3. Unbalanced forces
4. Unbalanced forces
5. Balanced forces