1.

The velocity-time graph of a body is given below. Find the average velocity from `t = 0` to `t = 40 s`. A. `20 m//s`B. `40 m//s`C. `50 m//s`D. `60 m//s`

Answer» Correct Answer - A
Displacement = area upto `t = 40 s`
=`(1)/(2) xx 20 xx 20 +(30 - 20) xx 20`
`+ (1)/(2)[20 + 60][40 - 30] = 800 m`
:. `v_(av) = ("Displacement")/("time") = (800)/(40) = 20 m//s`.


Discussion

No Comment Found

Related InterviewSolutions