Answer:
v = 13.5 m/s
Explanation:
v = u + at
u is initial velocity
a is acceleration
t is time
v is final velocity
using the info in the q, we know
u = 3
a = 1.5
t = 7
sub these numbers into the equation to find v - final velocity
v = u + at
v = 3 + (1.5×7)
v = 13.5 m/s