Unit 5 Review Flashcard

Front

What is momentum?

Back

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

Front

How do you calculate momentum?

Back

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

Front

What is the unit of momentum?

Back

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

Front

What happens to momentum in a closed system?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event (Law of Conservation of Momentum).

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, force (F) is equal to mass (m) times acceleration (a), represented by the formula F = ma.

Front

What is the effect of increasing the time of impact in a collision?

Back

Increasing the time of impact reduces the force experienced by the objects involved, which can help prevent injury.

Front

What is the momentum of an object at rest?

Back

The momentum of an object at rest is zero.

Front

What is the significance of equal forces in collisions?

Back

In collisions, equal forces act on both objects involved, but the resulting accelerations may differ due to their different masses.

Front

How does mass affect acceleration when the same force is applied?

Back

When the same force is applied, an object with greater mass will experience less acceleration than an object with less mass.

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 impulse = force × time.