Answer:
13.5 m/s
Explanation:
To start off, simply plug in the values into the equation. This is shown below...
v = velocity
u = initial velocity
a = acceleration
t = time
v = u + at ---> v = 3 + 1.5(7)
First, multiply 1.5 and 7 together. By doing so, you get 10.5. Now the equation is...
v = 3 + 10.5
To finish, simply add 3 and 10.5...
v = 3 + 10.5 ---> v = 13.5
Your answer is 13.5 m/s