Newton's Laws of Motion Flashcards

Flashcards on Newton's Laws of Motion

What is the first part of Newton's First Law of Motion?

An object at rest will remain at rest unless acted on by a net force.

What is Weight force?

The force of gravity on an object.

What is Normal force?

The force exerted by a surface on an object in contact with it.

What is the second part of Newton's First Law of Motion?

An object in motion will continue in motion with the same velocity unless acted on by a net force.

What role does friction play according to Newton's First Law?

Opposition to motion, acting as a net force that causes objects to stop.

If an object remains at rest, what is the net force acting on it?

The net force acting on it is zero.

If an object is in motion with constant velocity, what is the net force acting on it?

The net force acting on it is zero.

What is the definition of acceleration?

The change in velocity over time.

What is the formula for Newton's Second Law of Motion?

F = ma

If acceleration is constant, how does increasing the mass affect the net force?

Net force is directly proportional to the mass of the object.

If mass is constant, how does increasing the acceleration affect the net force?

Net force is directly proportional to the acceleration.

If the net force is constant, how does increasing the mass affect the acceleration?

Increasing the mass decreases the acceleration, and vice versa.

What is the definition of momentum?

Mass in motion

What is the formula for momentum?

p = mv

If a car and a train are moving at the same speed, which has more momentum and why?

It has more momentum because it has more mass.

What is the formula relating net force and momentum?

Fnet = Δp/Δt

What equation represents the Impulse-Momentum Theorem?

FΔt = mΔv

What is impulse?

The product of force and time.

What is Newton's Third Law of Motion?

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

Mathematically, how is Newton's Third Law expressed?

FAB = -FBA

A car travels on the road with a constant velocity. What is the horizontal net force acting on the car?

The net force is zero.

A car travels on the road with a constant velocity. What is the acceleration of the car?

The acceleration is zero.

When does acceleration occur?

If velocity changes.

If the net force on an object is zero, what happens to the velocity?

The velocity remains constant.

What is another name for Newton's First Law?

Also known as the law of inertia.

According to Newton's Second Law, what is the net force equal to?

Equal to the product of the mass and the acceleration.

According to Newton's Second Law, if force is constant and mass increases, what happens to acceleration?

Acceleration decreases.

How does Newton's Second Law relate mass and acceleration?

Heavy objects are hard to accelerate.

What is Newton's Third Law in simple terms?

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

How can Newton's Third Law be expressed mathematically?

M1 * A1 = M2 * A2