A car starts from rest and travels for 7.5 s

Question

with a uniform acceleration of +1.9 m/s2
The driver then applies the brakes, causing a
uniform deceleration of 1.1 m/s2
If the brakes are applied for 2.9 s, how fast
is the car going at the end of the braking
period?
Answer in units of m/s

Answer 1

v = 1.9*7.5 - 1.1*2.9

Answer 2

That’s wrong