T3.3 Newton's Laws of Motion Flashcard

Front

What does Newton's Third Law of Motion state?

Back

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

Front

What happens when a person pushes against a wall?

Back

The wall pushes back with equal strength in the opposite direction.

Front

Why are action-reaction forces not balanced?

Back

Because they act on different objects.

Front

What is inertia?

Back

The tendency of an object to resist changes in its velocity.

Front

What is the unit of acceleration in the International System of Units (SI)?

Back

m/s²

Front

Give an example of Newton's Third Law of Motion.

Back

A person walking pushes the ground backward, and the ground pushes the person forward.

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

Acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces result in a change in motion of an object.

Front

What is the effect of gravity on an object in free fall?

Back

It accelerates downward at a rate of approximately 9.81 m/s².