c
Given \(\quad \overrightarrow{ u }=5 \hat{ j } m / s , \overrightarrow{ a }=10 \hat{ i }+4 \hat{ j }, \quad\) final coordinate \(\left(20, y_{0}\right)\) in time \(t\)

\(S_{x}=4 u_x \times {t}+\frac{1}{2} a_{x} t^{2}\)

\(\frac{1}{2} \times 10 \times t^{2}\)

\(t=2 \sec\)

\(S_{y}=u_{y} \times t+\frac{1}{2} a_{y} t^{2}\)

\(y_{0}=5 \times 2+\frac{1}{2} 4 \times 2^{2}=18 m\)

\(2 \sec\) and \(18\, m\)