Force and Motion

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This can be expressed with the formula F=ma, where F is force, m is mass, and a is acceleration.

Front

Can you give an example of Newton's Second Law of Motion?

Back

An example of Newton's Second Law of Motion is that a truck requires a more powerful engine than a small car to achieve the same acceleration due to its greater mass.

Front

What is Newton's Third Law of Motion?

Back

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.

Front

Can you provide an example of Newton's Third Law of Motion?

Back

An example of Newton's Third Law of Motion is a boy jumping on a trampoline; as he pushes down on the trampoline, the trampoline pushes him upward with an equal force.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It acts in the opposite direction to the movement and can affect the speed and direction of the object.

Front

In the context of motion, what does inertia refer to?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion continues in motion unless acted upon by a net external force.

Front

What happens to a person who is not wearing a seat belt during a sudden stop?

Back

A person who is not wearing a seat belt continues to move forward at the original speed of the car due to inertia, which can lead to injury.

Front

What is the role of net force in motion?

Back

Net force is the total force acting on an object when all the individual forces are combined. It determines the object's acceleration and direction of motion.

Front

How does mass affect acceleration according to Newton's Second Law?

Back

According to Newton's Second Law, as mass increases, acceleration decreases for a given net force. This means heavier objects require more force to accelerate at the same rate as lighter objects.

Front

What is the relationship between action and reaction forces?

Back

Action and reaction forces are equal in magnitude and opposite in direction. When one object exerts a force on another, the second object exerts an equal force back on the first.