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Question

The product of force and the time interval for which it acts is known as:

This question was previously asked in
UPTET 2026 Paper 2 Social Studies Question Paper (3-Jul-2026) (Shift 1)
The correct answer is

Impulse

Impulse is defined as the product of the force applied to a body and the time interval for which that force acts: \(J = F \times \Delta t\).

By Newton's second law, force equals the rate of change of momentum, \(F = \dfrac{\Delta p}{\Delta t}\), so multiplying both sides by \(\Delta t\) shows that impulse equals the change in momentum, \(J = \Delta p\).

Momentum itself is mass times velocity, work is force times displacement, and power is the rate of doing work — none of these match force multiplied by time, which specifically defines impulse.

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