Impulse

Front

What is impulse?

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

What is the formula for calculating impulse?

Back

Impulse (J) = Force (F) × Time (t)

Front

What is the unit of impulse?

Back

The unit of impulse is Newton-seconds (N.s) or kilogram-meters per second (kg.m/s).

Front

How does impulse relate to momentum?

Back

Impulse is equal to the change in momentum of an object. This relationship is expressed as Impulse = Change in Momentum.

Front

If a force of 20 N is applied for 0.5 seconds, what is the impulse?

Back

Impulse = 20 N × 0.5 s = 10 N.s.

Front

What happens to the impulse if the time duration is doubled while keeping the force constant?

Back

If the time duration is doubled, the impulse will also double, since impulse is directly proportional to time.

Front

A car experiences an impulse of 30,000 kg.m/s. If the collision lasted 3 seconds, what was the average force exerted?

Back

Average Force = Impulse / Time = 30,000 kg.m/s / 3 s = 10,000 N.

Front

What is the relationship between impulse and force?

Back

Impulse is the product of the average force applied and the time duration over which it is applied. A larger force or a longer time results in a greater impulse.

Front

If an object is at rest and a force is applied, what will happen to its momentum?

Back

The momentum of the object will change from zero to a value equal to the impulse applied.

Front

What is the significance of impulse in sports?

Back

In sports, understanding impulse helps athletes optimize their performance by maximizing the force applied over time to achieve greater changes in momentum.