Forces (net force, Balanced/unbalanced forces)

What is the net force of an object that is not moving?

• 0 N (zero newtons) because the forces acting on it are balanced.

• 10 N (ten newtons) due to gravitational pull.

• 5 N (five newtons) from frictional forces.

• 15 N (fifteen newtons) as a result of applied force.

What is net force?

• Net force is the total of all forces acting on an object.

• Net force is the force that opposes motion.

• Net force is the overall force acting on an object when all the individual forces are combined.

• Net force is the force applied by gravity on an object.

If a net force of 400 N is acting downward, what does this indicate?

• It indicates that the object is at rest.

• It indicates that there is a greater force acting downward than upward, causing the object to accelerate downward.

• It indicates that the object is moving upward at a constant speed.

• It indicates that the forces acting on the object are balanced.

What is air resistance?

• Air resistance is a type of friction that acts against the motion of an object moving through the air.

• Air resistance is the force that pushes an object forward in the air.

• Air resistance is the gravitational pull experienced by objects in the atmosphere.

• Air resistance is the heat generated by an object moving through the air.

What is an example of an unbalanced force?

• A person pushing a stationary car; if the push is strong enough, the car will move.

• A car moving at a constant speed on a straight road.

• A book resting on a table.

• A ball rolling on a flat surface without any external force.

What is the relationship between mass and force?

• Force equals mass times acceleration (F = ma).

• Mass is independent of force.

• More mass requires less force to accelerate.

• Force is equal to mass divided by acceleration.

What is the unit of force?

• Pound (lb)

• Kilogram (kg)

• Newton (N)

• Joule (J)

What will happen if you apply a force to an object at rest?

• The object will remain at rest regardless of the force applied.

• The object will start to move in the direction of the applied force.

• The object will explode due to the force applied.

• The object will change its shape but not move.

How do you calculate net force?

• By multiplying mass and acceleration

• By subtracting opposing forces

• By adding all the forces acting on an object, taking direction into account

• By averaging the forces acting on an object

What is an example of balanced forces?

• A book resting on a table; the force of gravity pulling it down is balanced by the normal force from the table pushing it up.

• A car accelerating down a hill.

• A person pushing a wall with no movement.

• A ball rolling on a flat surface without friction.