What is defined as the change in momentum caused by an external force?

What is defined as the change in momentum caused by an external force?

• A. Force
• B. Impulse
• C. Energy transfer
• D. Acceleration

Answer: (B)

Impulse is defined as the change in momentum of an object when it is subjected to an external force over a specific time period. The relationship can be mathematically expressed with the impulse-momentum theorem, which states that the impulse applied to an object is equal to the change in its momentum. This theorem is crucial in understanding dynamics, as it highlights how forces acting on an object can alter its motion by changing its momentum. Impulse can be calculated as the product of the average force applied and the time duration for which the force acts. Therefore, it directly captures both the impact of the force and the time it is applied, making it a key concept in mechanics. The other concepts, while related, do not define the specific relationship between external force and change in momentum.

Impulse is defined as the change in momentum of an object when it is subjected to an external force over a specific time period. The relationship can be mathematically expressed with the impulse-momentum theorem, which states that the impulse applied to an object is equal to the change in its momentum. This theorem is crucial in understanding dynamics, as it highlights how forces acting on an object can alter its motion by changing its momentum.

Impulse can be calculated as the product of the average force applied and the time duration for which the force acts. Therefore, it directly captures both the impact of the force and the time it is applied, making it a key concept in mechanics. The other concepts, while related, do not define the specific relationship between external force and change in momentum.