Gujarati
2.Motion in Straight Line
medium

यदि किसी कण का विस्थापन $(10+2t^2) m/s$, है तो $2s$ तथा $5s$ के बीच कण का औसत त्वरण है...........$m/s^2$

A

$2$

B

$4$

C

$12$

D

$14$

Solution

(d) औसत त्वरण  $ = \frac{{{\rm{Change\, in \,velocity }}}}{{{\rm{Time\, taken }}}}$$ = \frac{{{v_2} – {v_1}}}{{{t_2} – {t_1}}}$

$ = \frac{{\left[ {10 + 2{{(5)}^2}} \right] – \left[ {10 + 2{{(2)}^2}} \right]}}{3} = \frac{{60 – 18}}{3}$$ = 14\;m/{s^2}$

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.