Momentum and Impulse Flashcard

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 impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as the product of the average force and the time duration of the force application.

Front

How do you calculate the change in momentum?

Back

Change in momentum is calculated by subtracting the initial momentum from the final momentum: Δp = p_final - p_initial.

Front

What is the relationship between impulse and change in momentum?

Back

Impulse is equal to the change in momentum: Impulse = Δp.

Front

What is the formula for calculating momentum?

Back

The formula for momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

If a truck has a momentum of 20,000 kg m/s and is traveling at 10 m/s, what is its mass?

Back

The mass of the truck is 2,000 kg, calculated using the formula m = p/v.

Front

What happens to momentum in a collision?

Back

In a closed system, the total momentum before a collision is equal to the total momentum after the collision, according to the law of conservation of momentum.

Front

What is the effect of a larger stopping distance on impulse?

Back

A larger stopping distance allows for a smaller average force to be applied over a longer time, resulting in a greater impulse and a safer stop.

Front

What is the unit of momentum?

Back

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

Front

What is the significance of a high momentum value?

Back

A high momentum value indicates that an object has a large mass, a high velocity, or both, making it more difficult to stop or change direction.