The object starts its journey from O which is treated as its reference point.
Let A, B and C represent the position of the object at different instants. At
first, the object moves through C and B and reaches A. Then it moves back
along the same path and reaches C through B.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer