Forces, Net Force, Force Diagrams

What is a force?

• A push or pull acting on an object.

• A type of energy that can be converted into work.

• A measure of an object's mass.

• A reaction to an object's motion.

What is an example of an unbalanced force?

• A car accelerates when the driver presses the gas pedal; the engine's force exceeds the frictional force.

• A book resting on a table remains stationary due to balanced forces acting on it.

• A ball thrown straight up will eventually stop and fall back down due to balanced forces.

• A person pushing a stationary car with equal force from both sides, resulting in no movement.

What is a force diagram?

• A visual representation of all the forces acting on an object, showing their directions and magnitudes.

• A type of graph used to plot the motion of an object over time.

• A diagram that illustrates the energy transformations in a system.

• A chart that lists all the forces in a physics experiment.

If two forces of 30 N are acting in opposite directions, what is the net force?

• 0 N

• 30 N

• 60 N

• 15 N

If a girl pushes with 20 N to the right and a boy pushes with 15 N to the right, what is the net force?

• 25 N to the right

• 30 N to the right

• 35 N to the right

• 40 N to the right

What is the significance of direction in forces?

• The direction of a force determines how it affects the motion of an object.

• The direction of a force has no impact on the motion of an object.

• Forces in the same direction always cancel each other out.

• The direction of a force only matters in a vacuum.

What does it mean if an object is accelerating?

• An object is accelerating when it is moving at a constant speed.

• An object is accelerating when the net force acting on it is not zero, causing its velocity to change.

• An object is accelerating when it is at rest and not moving.

• An object is accelerating when it is moving in a straight line without changing speed.

What is net force?

• Net force is the total force acting on an object after all the individual forces are combined.

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

• Net force is the sum of all forces acting on an object in one direction.

• Net force is the force that opposes motion.

What happens when forces are unbalanced?

• The object remains at rest.

• The net force is zero, and the object does not accelerate.

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

• The object moves in a circular path.

How do you calculate net force?

• By subtracting all the forces acting on an object

• By multiplying the mass of the object by its acceleration

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

• By averaging the forces acting on an object