Physics Force & Motion DUHS 2022
PMDC Verified Question 85 of 137
The rate of change of linear momentum of a body is equal to:
A
Net force
B
Net displacement
C
Net torque
D
Net inertia
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Net force
Concept:

This is the precise, formal mathematical definition of Newton's Second Law of Motion as originally presented by Isaac Newton.

Formula:

$$ \vec{F}_{net} = \frac{\Delta \vec{p}}{\Delta t} $$

Solution:

  • Momentum (\( \vec{p} \)) is mass times velocity.


  • The rate at which this momentum changes over time defines the net applied force required to cause that change.


Why other options are incorrect:

Torque relates to the rate of change of angular momentum. Displacement, inertia, and velocity represent fundamentally different dimensions.

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