newtons law

What is Newton's First Law (Law of Inertia)?

An object will stay at rest or continue moving at a constant speed in a straight line unless acted upon by an unbalanced force.

What is inertia?

The tendency of an object to resist changes in motion.

Can you give an example of Newton's First Law?

A book stays on the table until someone pushes it. Passengers move forward when a bus suddenly stops.

What is Newton's Second Law (Law of Acceleration)?

The acceleration of an object depends on the net force acting on it and its mass.

What is the formula for Newton's Second Law?

F = ma, where F = Force (Newtons, N), m = Mass (kilograms, kg), and a = Acceleration (m/s²).

What happens when you apply more force?

More force results in more acceleration.

Why is it easier to push an empty shopping cart than a full one?

Because the empty shopping cart has less mass and therefore requires less force to accelerate.

What is Newton's Third Law (Action-Reaction Law)?

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

What do action and reaction forces have in common?

They are equal in size, act in opposite directions, and act on different objects.

Can you provide an example of action and reaction forces?

When walking, you push the ground backward, and the ground pushes you forward.

What is the main idea of Newton's 1st Law?

Objects resist changes in motion (Inertia).

What does thrust in rockets illustrate?

A rocket pushes gases downward, and the gases push the rocket upward.

What are the units for force, mass, and acceleration?

Force is measured in Newtons (N), mass in kilograms (kg), and acceleration in m/s².

What is net force?

Net force is the total force acting on an object.