How high will a ball thrown with an initial speed of 80 ft/sec be at 3 seconds?

[aldeemativo]

Homework Statement

a ball is thrown upward with an initial speed of 80 ft/sec.

Homework Equations

how high is it at 3 seconds...?

The Attempt at a Solution

using the formula:h = Vo*t - 1/2 g*t²
where h as the height
Vo is the original velocity
g as the gravitational pull : 32ft/sec
and t as the time...


my attempt answer is 96 ft...


is this correct?

 

[kuruman]

It is.