Question

Use the formula v = u + at to find the velocity, when

The initial velocity is 3m/s.
The Acceleration is 1.5m/s Squared.
The time is 7 seconds.

Answer 1

`v = u + at \\ v = 3 + (1.5 * 7) \\ v = 3 +10.5 \\ \boxed{v = 13.5 \: m {s}^( - 1)}`

13.5 m/s is the right answer.