What is the formula for impulse?

Impulse is defined as the change in momentum of an object when a force is applied over a specific period of time. Mathematically, impulse can be expressed as the product of the force applied to an object and the time duration over which the force acts. This relationship is crucial because it describes how the force influences the motion of the object during that interval.

The formula for impulse, therefore, is:

Impulse (J) = Force (F) × Time (Δt)

This reflects the cumulative effect of the force acting over the time span, resulting in a change in momentum. This concept is fundamental in physics, particularly in understanding how objects respond to forces.

In contrast, other formulas presented do not accurately define impulse. For example, the first option relates to momentum rather than impulse. The third option mixes work and time, which does not pertain to the definition of impulse. Similarly, the last option involves power, which is energy per unit time, rather than the relationship between force and time relevant to impulse. Understanding this distinction is essential for mastering the concepts of mechanics and their applications in various physical scenarios.