Flashcard: Newton's Laws & Gravity 2024

Front

What is inertia?

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 stays in motion unless acted upon by a force.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies toward each other. The strength of gravity depends on the masses of the objects and the distance between them.

Front

What does it mean for a force to be balanced?

Back

Balanced forces occur when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What is the relationship between mass and gravity?

Back

The strength of gravity between two objects increases with greater mass. More massive objects exert a stronger gravitational pull.

Front

How does distance affect gravitational force?

Back

As the distance between two objects increases, the gravitational force between them decreases. This is known as the inverse square law.

Front

What is Newton's First Law of Motion?

Back

Newton's First Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that 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

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

Front

What is an example of an action-reaction pair?

Back

When a rocket expels exhaust gases downward, the reaction is that the rocket moves upward with an equal force.

Front

What is the formula for calculating gravitational force?

Back

The formula for gravitational force is F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.