A force in the +x-direction with magnitude F(x)=18.0N−(0.530N/m)x is applied to a 7.60kg box that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box.

Question

If the box is initially at rest at x=0, what is its speed after it has traveled 17.0m ?
v=?

Answer 1

answer this please

Answer 2

7.7

Answer 3

That was wrong

Answer 4

7.77m/s