Force Pairs

What happens when a bird hits a car's windshield?

• The bird is instantly killed by the impact.

• The force of the car on the bird is equal to the force of the bird on the car.

• The car's windshield shatters immediately.

• The bird flies away unharmed.

What is Newton's Third Law of Motion?

• For every action, there is an equal and opposite reaction.

• An object in motion stays in motion unless acted upon by an external force.

• The force of gravity is proportional to the mass of the objects involved.

• The acceleration of an object is directly proportional to the net force acting on it.

How does mass affect force?

• Mass is directly proportional to force, meaning as mass increases, force increases.

• Mass is inversely proportional to force, meaning as mass increases, force decreases.

• According to Newton's second law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• Mass has no effect on force; force is constant regardless of mass.

What are force pairs?

• Force pairs are the action and reaction forces that occur simultaneously when two objects interact.

• Force pairs are the forces that act on a single object to keep it in motion.

• Force pairs are the equal and opposite forces that cancel each other out completely.

• Force pairs are the forces that are always unequal and act in the same direction.

What is an example of motion?

• A car driving down the road is an example of motion, as it changes its position over time.

• A tree standing still in a park.

• A person sitting on a bench.

• A rock lying on the ground.

What is inertia?

• Inertia is the tendency of an object to resist changes in its state of motion.

• Inertia is the force that causes an object to accelerate.

• Inertia is the measure of an object's mass.

• Inertia is the energy possessed by a moving object.

What is the difference between contact and non-contact forces?

• Contact forces act at a distance, while non-contact forces require physical interaction between objects.

• Contact forces require physical interaction between objects, while non-contact forces act at a distance (e.g., gravitational force).

• Contact forces are stronger than non-contact forces in all situations.

• Non-contact forces can only be observed in a vacuum.

What is an unbalanced force?

• An unbalanced force occurs when the total forces acting on an object are not equal, causing the object to accelerate.

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

• An unbalanced force is a force that acts in the opposite direction of motion, slowing the object down.

• An unbalanced force is a type of force that only acts on stationary objects.

What is an example of balanced forces?

• When two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

• When a car accelerates forward while the brakes are applied.

• When a person pushes a wall and the wall does not move.

• When an object falls freely under the influence of gravity.

What is the net force?

• The total force acting on an object after all individual forces are combined, determining its acceleration.

• The force that opposes motion, acting in the opposite direction of the applied force.

• The force exerted by gravity on an object, affecting its weight.

• The force that is always equal to the mass of an object multiplied by its velocity.