Momentum and Impulse

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 its application.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object. This is expressed mathematically as Impulse = Δp = F_avg * Δt.

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 unit of momentum in the metric system?

Back

The standard unit of momentum in the metric system is kilograms meter per second (kg·m/s).

Front

How do you calculate the momentum of an object?

Back

To calculate the momentum of an object, use the formula p = mv, where p is momentum, m is mass in kilograms, and v is velocity in meters per second.

Front

What is the effect of a soft surface on the impact of an egg?

Back

A soft surface increases the time of impact and decreases the force experienced by the egg, helping it to remain intact.

Front

If a 0.250 kg cart is moving at 0.400 m/s, what is its momentum?

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 is the total momentum of a system consisting of a 10 kg toy truck moving at 5 m/s East and a 5 kg toy car moving at 10 m/s West?

Back

The total momentum of the system is 0 kg·m/s, as the momentum of the truck and car cancel each other out.

Front

Which has greater momentum: a turtle crossing the road or a parked car?

Back

A turtle crossing the road has greater momentum than a parked car because the parked car has zero momentum (it is not moving).