Asked: U.P. P.C.S. (Pre) 2003medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
त्वरण ज्ञात करने का सही सूत्र कौन-सा है?
Which is the correct formula to calculate acceleration?
SELECT CORRECT OPTION:
A
Correct$a = \frac{v - u}{t}$
B
$a = u + vt$
C
$a = \frac{v + u}{t}$
D
$a = \frac{v + u}{2}$
Official Solution & Explanation:
Correct Answer: Option A($a = \frac{v - u}{t}$)
गति के प्रथम समीकरण $v = u + at$ से: $at = v - u \implies a = \frac{v - u}{t}$, जहां $v$ अंतिम वेग, $u$ प्रारंभिक वेग तथा $t$ समय अंतराल है।
From the first equation of linear motion $v = u + at$, we obtain acceleration $a = \frac{v - u}{t}$, where $v$ is final velocity, $u$ is initial velocity, and $t$ is time elapsed.