Answer to Question #146588 in Physics for hillary

Question

0 m/s +3 m/s ____ +9 m/s +12 m/s +15 m/s _____ +21 m/s +24 m/s +27 m/s _____

find the final velocity

Answer 1

The final velocity is:

$$v_f = 0+3+9+12+15+21+24+27 = 111m/s$$

Answer. 111 m/s.