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 Impulse = Force × Time.

Front

How is impulse related to momentum?

Back

Impulse is equal to the change in momentum of an object. This relationship is expressed as Impulse = Δp = p_final - p_initial.

Front

What is the formula for calculating impulse?

Back

Impulse (J) = Force (F) × Time (t) or J = F * t.

Front

If a force of 10 N is applied for 2 seconds, what is the impulse?

Back

Impulse = 10 N × 2 s = 20 N.s.

Front

What is the unit of momentum?

Back

The unit of momentum is kg m/s.

Front

What is the unit of impulse?

Back

The unit of impulse is also N.s (Newton-seconds) or kg m/s.

Front

How does increasing the time of impact affect force?

Back

Increasing the time of impact reduces the force experienced by an object, as impulse is spread over a longer duration.

Front

What is the momentum of a 3 kg object moving at 4 m/s?

Back

Momentum = mass × velocity = 3 kg × 4 m/s = 12 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, according to the law of conservation of momentum.