T3 L3&4 Newton's Laws and Friction

Front

What is Newton's First Law of Motion?

Back

An object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by a nonzero net force.

Front

What is inertia?

Back

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

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium prevents further acceleration.

Front

What happens to the forces acting on an object at terminal velocity?

Back

The forces acting on the object are balanced, meaning the force of gravity is equal to the force of air resistance.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it is in contact with another surface.

Front

What are the two main factors that affect friction?

Back

The types of surfaces involved and how hard the surfaces are pushed together.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's Third Law of Motion?

Back

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

Front

How does a seatbelt relate to Newton's First Law?

Back

A seatbelt restrains your body from continuing to move forward when a car suddenly stops, illustrating the concept of inertia.

Front

What is the role of air resistance in motion?

Back

Air resistance is a type of friction that opposes the motion of objects moving through the air, affecting their speed and acceleration.