The displacemennt of a moving partical is proportional to the square of the time, For this particle

Options

A. the velocity is constant
B. the velocity is variable
C. the acceleration is constant
D. the acceleration is variable

Answer

B, C

Explanation

`s prop t^(2)`
`:. s = ct` where `c = constant`
`(i) v = (ds)/(dt) = 2 ct`
`:. V prop t`
`(ii) a = (dv)/(dt) = 2c`
so, `a = constant`