The displacement of a particle moving in a straight line is described by the relation `s=6+12t-2t^(2)`. Here `s` is in metre and `t` in second. The distance covered by the particle in first `5s` is

Options

A. 20 m
B. 32 m
C. 24 m
D. 26 m

Answer

A

Explanation

For equilibrium of
`3mg sin 37^(@) = f + 2mg cos 37^(@)`
`implies f=2m`
For man, `mg sin 37^(@) + f = ma`
`6m + 2m = ma`
`a = 8 m//s^(2)`