the primary or main leader or person in charge

an amount of money lent or invested, on which interest is paid

मुख्य राशि

English Usage: She paid off the principal early to save on interest.

Hindi Usage: उसने ब्याज बचाने के लिए मुख्य राशि पहले चुका दी।

the speed of something in a given direction

a term used in physics to describe the rate of change of position

गति की दर

English Usage: In physics, velocity is calculated using displacement over time.

Hindi Usage: भौतिकी में, गति की दर को समय के अनुसार विस्थापन का उपयोग करके गणना की जाती है।