# Equation z = ct + d, z is measured in meters and t in seconds; dimensions of D?

## Homework Statement

In the equation z = ct + d, z is measured in meters and t is measured in seconds. What are the dimensions (units) of d?

s/m, m/s, m, s, m*s

## The Attempt at a Solution

plugged in m for z, s for t, and m/s for c. solved for D and got 0.

rcgldr
Homework Helper
Assume that z is not equal to ct, then if you solve for d, what do you get?

Assume that z is not equal to ct, then if you solve for d, what do you get?

ermm...i'm guessing m?

Would it make sense to add two terms together that had different units? Like adding 5 meters plus 35 Amperes?

rcgldr
Homework Helper
Can you solve for d and show the equation?

d = ???

Chestermiller
Mentor
All the individual terms in a physical equation have to have the same units.