1. The problem statement, all variables and given/known data In the equation z = ct + d, z is measured in meters and t is measured in seconds. What are the dimensions (units) of d? answer options are... s/m, m/s, m, s, m*s 2. Relevant equations 3. The attempt at a solution plugged in m for z, s for t, and m/s for c. solved for D and got 0.