Fill in the blanks for these columns.

Time (seconds) = 0 (start), 2, ?, ?, 8, 10.
Velocity (m/s) = 0 (start), 3, 6, 9, ?, 15.

Time (seconds) = 0 (start), 2, 4, 6, 8, 10.

Velocity (m/s) = 0 (start), 3, 6, 9, 12, 15.