An object reaches a velocity of 147m/s in 15s at a uniform acceleration vertical plane .calculate the size of the uniform acceleration ,also determine whether it was an upward or downward movement from rest.

Answer 1

since you give so + or - sign, we must assume that the 147 m/s is positive.
a = 147/15 m/s^2
Since v is positive, the motion is upward (assuming the usual conventions)