Momentum Review

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula p = mv, where m is the mass of the object and v is its velocity.

Front

What happens to momentum when two objects collide?

Back

In a collision, the total momentum of the two objects before the collision is equal to the total momentum after the collision, assuming no external forces act on them.

Front

If an object’s speed is doubled, what happens to its momentum?

Back

If an object's speed is doubled, its momentum also doubles, since momentum is directly proportional to velocity.

Front

What is an example of conservation of momentum in everyday life?

Back

An example of conservation of momentum is two ice skaters pushing off each other and moving in opposite directions.

Front

What is the unit of momentum?

Back

The unit of momentum is kilogram meter per second (kg·m/s).

Front

How does mass affect momentum?

Back

Momentum is directly proportional to mass; if the mass of an object increases while its velocity remains constant, its momentum increases.

Front

What is the momentum of a 0.250 kg cart moving at 0.400 m/s?

Back

The momentum of the cart is 0.1 kg·m/s, calculated using p = mv (0.250 kg * 0.400 m/s).

Front

What does a flat line on a velocity-time graph indicate?

Back

A flat line on a velocity-time graph indicates that the object is at rest (velocity = 0).