Question

multiple choice question
the product of the average net force on an object and the time interval over which the force acts is termed

energy.

work.

momentum.

impulse.

Explanation:

To solve this, we recall the definitions:

• Energy: Capacity to do work, not force×time.
• Work: Force×displacement, not force×time.
• Momentum: Mass×velocity, related to impulse (impulse = change in momentum).
• Impulse: Defined as the product of average net force and the time interval ($J = F_{avg} \times \Delta t$). So the correct term is impulse.

Answer:

D. impulse