The velocity-time graph of a particle in straight line motion is veloity-time graph of a particle in straight line motion is shown in. The particle starts its motion from origin.
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Find the average acceleration from `2 s` to `6 s`.

Options

A. `-2 m s^(-2)`
B. `-3//2 m s^(-2)`
C. `2 m s^(-2)`
D. `3//2 m s^(-2)`

Answer

B

Explanation

`a_(av) = (v_(2) -v_(1))/(t_(2) -t_(1)) = (-2-4)/(6-2) =(3)/(2)m s^(-2)`,