Question

When answering the following questions, variables with subscripts should be entered as if the subscript were part of the variable name. (For example, x_i would be written as "xi" in your formula.)
Starting from the constant-acceleration kinematic equations, write a formula that gives v_i in terms of t, x_i, x_f, and a.  

v_i =

Starting from the constant-acceleration kinematic equations, write a formula that gives x_f in terms of t, x_i, v_f, and a.
x_f =

Main Menu Contents Grades Course Contents » . Tmer Notes Evaluate t (Feedback -Print Info When answering the following questions, variables with subscripts should be entered as if the subscript were part of the variable name. (For example, x would be written as"xi" in your formula.) constant-acceleration kinematic equations, write a formula that gives v in terms of t, Xi, Xf, and a. vi = (Xf-Xi) + 0.5*a*t)/ t Submit Answer Unable to understand formula.Tries 0/8 Previous Tries of t, Xi, Vf, and a. Submit Answer Unable to understand formula.Tries 0/8 Previous Tries hreaded View Chronological View Other Mv neneral nreferences on what is marked as

Answer 1

formula for vi is

vi = {(xf-xi) -0.5*a*t² }/t

formula for xf is

xf = xi +vf*t -0.5*a*t²