Answer:
11.9 m/s
*But if you need the answer with sig figs it should be 10m/s (1sf) or 12m/s (2sf)
Explanation:
[tex]{vf}^{2} - {vi}^{2} = 2ad[/tex]
[tex] {vf}^{2} = 2ad + {vi}^{2} [/tex]
[tex] {vf}^{2} = 2 \times 1.5 \times 20 + {9}^{2} [/tex]
[tex] {vf}^{2} = 60 + 81[/tex]
[tex] {vf}^{2} = 141[/tex]
[tex]vf = \sqrt{141} [/tex]
[tex]vf = 11.874[/tex]
best answer if it worked
