Newton's 3rd Law and Momentum

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

Define momentum.

Back

Momentum is the product of an object's mass and its velocity (p = mv).

Front

What factors affect the momentum of an object?

Back

Mass and velocity are the two factors that affect momentum.

Front

How is momentum conserved in a closed system?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event.

Front

What is an inelastic collision?

Back

An inelastic collision is one in which kinetic energy is not conserved, and objects may stick together after the collision.

Front

What is an elastic collision?

Back

An elastic collision is one in which both momentum and kinetic energy are conserved.

Front

If two objects collide and one is much more massive than the other, how does this affect their velocities post-collision?

Back

The more massive object will change its velocity less than the less massive object.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time (Impulse = Force x Time).

Front

How does the concept of impulse relate to Newton's 3rd Law?

Back

According to Newton's 3rd Law, the impulse experienced by one object is equal and opposite to the impulse experienced by another object.

Front

What happens to the momentum of an object if its velocity doubles?

Back

If the velocity of an object doubles, its momentum also doubles, assuming mass remains constant.