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) or J = Δp (change in momentum).

Front

What is the unit of impulse?

Back

The unit of impulse is Newton-second (N⋅s) or kilogram-meter 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 J = Δp.

Front

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

Back

Impulse = 10 N × 2 s = 20 N⋅s.

Front

What happens to the momentum of an object when an impulse is applied?

Back

The momentum of the object changes by the amount of the impulse applied.

Front

A 5 kg object is at rest. A force of 15 N is applied for 3 seconds. What is the final velocity?

Back

Impulse = 15 N × 3 s = 45 N⋅s; Change in momentum = 5 kg × final velocity; 45 N⋅s = 5 kg × final velocity; Final velocity = 9 m/s.

Front

What is the relationship between force, time, and impulse?

Back

Impulse is the product of the average force applied and the time duration over which it is applied.

Front

A car experiences a force of 2000 N for 0.5 seconds. What is the impulse?

Back

Impulse = 2000 N × 0.5 s = 1000 N⋅s.

Front

What is the effect of increasing the time duration of a force applied to an object?

Back

Increasing the time duration of a force applied increases the impulse, resulting in a greater change in momentum.