hmm... that formatting looks familiar....
Question 2:
Given v = 1+x^2
Recall acceleration = v * (dv/dx)
a = (1+x^2)(2x)
Sub x = 2m...
Question 3:
Recall the alternate formula a = d(1/2 * v^2)/dx
Given v^2 = 2+ x^4
1/2 * v^2 = 1 + (x^4)/2
d(1/2 * v^2)/dx = a =?