1.

Refer `Q.139`. The average acceleration of the body from `t = 0` to `t = 15 s` is.A. `1.25 m//s^2`B. `4//7 m//s^2`C. `5//6 m//s^2`D. `7//6 m//s^2`

Answer» Correct Answer - D
Area upto `15 s = 175 m//s = v_2`
Velocity at `t = 15 s`
`a_(av) = (v_2 - 0)/(15) = (17.5)/(15) = (7)/(6) m//s^2`.


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