Final answer:
After accelerating for 3 seconds at 1.4 m/s², from an initial velocity of 3 m/s, the new velocity is 7.2 m/s.
Step-by-step explanation:
The question asks how fast you are now traveling after accelerating from an initial velocity of 3 m/s at an acceleration of 1.4 m/s² for 3 seconds. To find the final velocity, you can use the equation v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.
Plugging in the values:
v = 3 m/s + (1.4 m/s² × 3 s) = 3 m/s + 4.2 m/s = 7.2 m/s.
After the 3 seconds of acceleration at 1.4 m/s², you are traveling at a velocity of 7.2 m/s.