Momentum and impulse test review 2024

Front

What is momentum?

Back

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

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.

Front

How does a crumple zone in a car affect collision forces?

Back

A crumple zone decreases average force by increasing the time over which the collision occurs.

Front

What is the relationship between net force and momentum?

Back

For an object to have a change in momentum, there must be a net force acting on it.

Front

What happens to the momentum of an object when it collides with another object?

Back

The total momentum before the collision is equal to the total momentum after the collision, assuming no external forces act on the system.

Front

How do you calculate the change in velocity?

Back

Change in velocity is calculated as final velocity minus initial velocity (Δv = v_final - v_initial).

Front

What is the formula for calculating average force?

Back

Average force can be calculated using the formula: Average Force = Change in Momentum / Time.

Front

What is the effect of time on average force during a collision?

Back

Increasing the time over which a collision occurs decreases the average force experienced by the objects involved.

Front

What is the significance of a negative change in velocity?

Back

A negative change in velocity indicates that the object has reversed direction.

Front

How does mass affect momentum?

Back

An increase in mass will result in a proportional increase in momentum if velocity remains constant.