Question

can somone help me

Answer 1

wut question ?

Answer 2

das mathematics, not english, gl tho

Answer 3

you marked it has English which makes it confusing ;-;

Answer 4

\[v _{0}=0~m/s\]
\[average ~v=3.5~m/s\]
\[average~of~v _{0}~and~v _{f}=\frac{ v _{0}+v _{f} }{ 2 }\]
\[3.5=\frac{ 0+v _{f} }{ 2 }\]
\[v _{f}=2\times3.5=7~m/s\]