- #1

vsage

What is the velocity at x = 4?

I found it to be 0.22m/s but my friends swear up and down it's not. Could I get a second opinion on this answer? My work is something like this:

F = -6x

a = -6/2.7 * x

v = -3/2.7 * x^2 +c

v(3) = 8

8 = -3/2.7 * 3^2 + c

c = 18

v(4) = -3/2.7 * 4^2 + 18

v(4) = 0.222

Corrections please? Thanks in advance.