**Given :** Time= 5s , Height=5m

**To find :** Gravitational acceleration

**Formula:** \(S=ut+\tfrac{1}{2}gt^2\)

**steps:**

by formula

\(5=0\times t+\tfrac{1}{2}g(5)^2\)

\(5=\tfrac{1}{2}g\times25\)

\(\therefore g=\tfrac{2}{5}\)

\(\therefore g=0.4 m/s^2\)

**Video solution from Brainiak **