Understanding Newton's Laws of Motion

What does Newton's First Law state about an object at rest?

• An object at rest will remain at rest until it is heated.

• An object at rest will eventually start moving on its own.

• An object at rest can only be moved by a force equal to its mass.

• An object at rest stays at rest unless acted upon by an external force.

Which of the following best describes inertia?

• Inertia is the resistance of an object to change its state of motion.

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

• Inertia is the energy stored in a moving object.

• Inertia is the speed of an object in motion.

According to Newton's Second Law, what is the relationship between force, mass, and acceleration?

• Force is the sum of mass and acceleration (F = m + a)

• Force is independent of mass and acceleration (F = constant)

• Force equals mass times acceleration (F = m * a).

• Force equals acceleration divided by mass (F = a / m)

If a car accelerates, what happens to the force acting on it according to Newton's Second Law?

• The force acting on the car decreases.

• The force acting on the car increases.

• The force acts in the opposite direction of acceleration.

• The force remains constant regardless of acceleration.

What is the action force when a swimmer pushes off the wall of a pool?

• The push from the swimmer's legs against the water.

• The water resistance against the swimmer.

• The force exerted by the swimmer on the wall.

• The force of gravity acting on the swimmer.

Which law explains why a passenger lurches forward in a car that suddenly stops?

• Newton's First Law of Motion

• Conservation of Momentum

• Law of Universal Gravitation

• Newton's Second Law of Motion

What happens to an object's motion when no net force acts on it?

• The object continues in its current state of motion.

• The object changes its speed randomly.

• The object accelerates in the opposite direction.

• The object comes to a complete stop.

How does mass affect the inertia of an object?

• Inertia decreases with increased mass.

• Mass has no effect on inertia.

• Mass increases the inertia of an object.

• Inertia is independent of mass.

According to Newton's Third Law, what happens for every action?

• An action can occur without any reaction.

• Every action is followed by a greater action.

• There is an equal and opposite reaction.

• For every action, there is no reaction.

If you push against a wall, what is the reaction force?

• The wall collapses under the pressure.

• The wall absorbs the force without any reaction.

• The wall pushes back with an equal force in the opposite direction.

• The wall remains completely still and unresponsive.