Answer:
The answer to your question is v = 13.5 m/s
Step-by-step explanation:
The find the initial velocity, just substitute the values given in the formula and simplify.
v = u + at
u = initial velocity
a= acceleration
t = time
v = 3 + (1.5)(7)
v = 3 + 10.7
v = 13.5 m/s