law 1
law 2
law 3
100

What is inertia?

 The tendency of an object to resist any change in its state of motion.

100

What is Newton's Second Law?

This law explains why an empty shopping cart is easier to push than a full one.

100

What is Newton's Third Law?

When you jump, the force your feet exert on the ground is equal and opposite to the force the ground exerts on you.

200

What is Newton's First Law?

A space probe drifting through interstellar space will continue to move at a constant velocity, according to this law

200

What is increase?

When you apply a greater force to an object, its acceleration will do this.

200

What is the equal and opposite reaction?

 A swimmer pushes water backward to move forward. This push on the water is the action, and the water pushing the swimmer forward is the reaction.

300

What is zero net force?

 This is the overall force acting on an object when all external forces cancel each other out.

300

What is the relationship between mass and acceleration?

 If you double the mass of an object while applying the same force, its acceleration will be cut in half.

300

What is the law of action and reaction?

When a rocket expels hot gases downward, it is propelled upward as a result of this law.

400

What is the law of inertia?

When you quickly pull a tablecloth from under a set of dishes, this law explains why the dishes remain in place.

400

 A rocket needs to generate a massive amount of thrust to accelerate into space because of its large mass, as described by this formula.

F = ma
400

What is opposite?

 This is the direction of the reaction force relative to the action force.

500

What is an unbalanced force?

This type of force is needed to overcome an object's inertia and cause it to change its state of motion.

500

What is air resistance?

A skydiver in free-fall will accelerate until the force of gravity is balanced by this upward force.

500

What is a force pair?

 The force pair in this law is a "real" interaction, not a mere bookkeeping device, and is important in analyzing problems of static equilibrium.

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