Question

Below are the big three kinematics equations. Can you help me solve for a?

xf = xi + vi(t) + 1/2at^2
vf = vi + a*t
vi^2 = vi^2 + 2a(xf - xi)

Also, what are the final units of each?

Answer 1

The first is\[a=\frac{ 2xf-\xi-vi(t) }{ t ^{2} }\] I believe, we use different notation so I know it slightly differently
Second is \[a=\frac{ vf-vi }{ t}\]
The third I'm not comfortable with because of the different notation, but the unit is always m/s^2 as that is the unit for acceleration, hope I helped

Answer 2

Thank you