Newton's Laws of Motion

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the more inertia it possesses.

Front

Which has more inertia: a bowling ball or a tennis ball?

Back

A bowling ball has more inertia than a tennis ball due to its greater mass.

Front

What does Newton's First Law state?

Back

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

Front

Which law explains why a larger force is needed to accelerate a heavier object?

Back

Newton's 2nd Law explains this; it states that Force equals mass times acceleration (F=ma).

Front

Which has less inertia: a feather or a hammer?

Back

A feather has less inertia than a hammer because it has less mass.

Front

What is Newton's Second Law?

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.

Front

What is the formula for Newton's Second Law?

Back

The formula is F=ma, where F is force, m is mass, and a is acceleration.

Front

What does Newton's Third Law state?

Back

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

Front

If the force on a car is doubled, what happens to the acceleration?

Back

If the force is doubled, the acceleration is also doubled, according to Newton's Second Law.

Front

What is an example of Newton's First Law in everyday life?

Back

A passenger in a car lurches forward when the car suddenly stops; this is due to inertia.