Amazing Unit 3 flashcardziz

Front

What is impulse in physics?

Back

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

Front

How is momentum defined?

Back

Momentum is defined as the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

Front

What happens to momentum in a closed system?

Back

In a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event, according to the law of conservation of momentum.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object. Mathematically, Impulse = Change in Momentum = Final Momentum - Initial Momentum.

Front

What factors affect the impulse experienced by an object?

Back

Impulse is affected by the magnitude of the force applied and the duration of time the force is applied.

Front

In a collision, what determines the severity of the impact?

Back

The severity of the impact is determined by the impulse experienced, which depends on the speed of the objects and the time over which they come to a stop.

Front

Why does an egg thrown at a sheet not break, while one thrown at the ground does?

Back

The egg thrown at the sheet experiences a longer time to come to a stop, resulting in a smaller impulse and less force on impact compared to the egg thrown at the ground.

Front

What is the effect of a longer time of crash on impulse?

Back

A longer time of crash reduces the force experienced by an object, resulting in a smaller impulse and less damage.

Front

How does mass affect momentum?

Back

Momentum is directly proportional to mass; as mass increases, momentum increases if velocity remains constant.

Front

What is the formula for calculating impulse?

Back

Impulse = Force x Time.