iran-konkur 2018 Q179

iran-konkur · Other · konkur-riazi_1397_specialized Constant acceleration (SUVAT) Vertical projection (up or down) from a height
179- A stone is thrown vertically upward from height $h$ with initial velocity $V_0$ and hits the ground after $4$ seconds. If in the last second of its motion it travels $\dfrac{h}{2}$, how many meters is $h$? $\left(g = 10\,\dfrac{\text{m}}{\text{s}^2}\right)$
  • [(1)] $60$
  • [(2)] $90$
  • [(3)] $120$
  • [(4)] $180$

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\textbf{179-} A stone is thrown vertically upward from height $h$ with initial velocity $V_0$ and hits the ground after $4$ seconds. If in the last second of its motion it travels $\dfrac{h}{2}$, how many meters is $h$? $\left(g = 10\,\dfrac{\text{m}}{\text{s}^2}\right)$

\begin{itemize}
\item[(1)] $60$
\item[(2)] $90$
\item[(3)] $120$
\item[(4)] $180$
\end{itemize}



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