Question

An object travels 8.0m south in 3.2s while uniformly accelerating at a rate of 0.71m/s2 south. What was the initial velocity of the object?

Answer 1

`"1.364 m/s"`

Explanation:

`"S" = "ut" + 1/2"at"^2`

`"u" = ("S"\ - 1/2"at"^2)/"t" = ("8.0 m"\ - (1/2 xx "0.71 m/s"^2 xx ("3.2 s")^2))/"3.2 s" = "1.364 m/s"`