To find \( v \) using the equation \( v = u + at \), we can plug in the values given:
- \( u = 18 \)
- \( a = 6 \)
- \( t = 4 \)
Now we can perform the calculation:
\[ v = 18 + (6 \times 4) \]
First, calculate \( 6 \times 4 \):
\[ 6 \times 4 = 24 \]
Now plug that back into the equation:
\[ v = 18 + 24 \]
Now add:
\[ v = 42 \]
Thus, the value of \( v \) is \( 42 \).