Net Forces

What is the role of applied forces?

• Applied forces are forces that are exerted on an object by a person or another object, causing it to move or change its motion.

• Applied forces are always equal and opposite to the forces of friction.

• Applied forces are only relevant in the context of static objects.

• Applied forces are forces that act on an object without causing any movement.

What happens to an object when the net force is zero?

• The object accelerates in the direction of the net force.

• The object remains at rest or continues to move at a constant velocity.

• The object experiences an increase in speed.

• The object changes direction.

How do you calculate net force?

• By multiplying the mass of the object by its acceleration.

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

• By averaging the forces acting on an object.

• By taking the square root of the sum of the forces acting on an object.

What causes an object to change its motion?

• A balanced force

• An unbalanced force

• Frictional force

• Gravitational force

What is an unbalanced force?

• An unbalanced force occurs when the forces acting on an object are not equal, causing a change in the object's motion.

• An unbalanced force is when all forces acting on an object are equal, resulting in no change in motion.

• An unbalanced force is a force that acts in the opposite direction to the motion of an object.

• An unbalanced force is a type of force that only occurs in a vacuum.

Give an example of balanced forces in everyday life.

• A book resting on a table

• A car accelerating on a highway

• A person pushing a wall

• A ball rolling down a hill

What is inertia?

• The force that causes an object to move in a circular path.

• The tendency of an object to resist changes in its state of motion.

• The speed at which an object travels in a vacuum.

• The gravitational pull exerted by an object on another object.

What is the unit of force?

• Joule (J)

• Newton (N)

• Pascal (Pa)

• Watt (W)

What is the effect of gravity on objects?

• Gravity is a force that pulls objects toward each other, giving weight to objects and causing them to fall toward the Earth.

• Gravity causes objects to float away from each other.

• Gravity has no effect on the weight of objects.

• Gravity only affects objects in motion.

What is the significance of direction in forces?

• The direction of a force is crucial because it determines how the force will affect the motion of an object; forces in the same direction add together, while forces in opposite directions subtract.

• The direction of a force is irrelevant as forces always act equally regardless of their direction.

• The direction of a force only matters in static situations and has no effect on moving objects.

• The direction of a force can be ignored if the magnitude is known.