iran-konkur 2020 Q191

iran-konkur · Other · konkur-riazi_1399_specialized_old-curriculum Not Maths
191. In the figure below, an athlete throws a ball with an initial speed of $6\,\dfrac{\text{m}}{\text{s}}$ and the magnitude of the ball's velocity at the moment of entering the basket is $5\,\dfrac{\text{m}}{\text{s}}$. The distance from the throwing point to the surface of the ground $(h_1)$ is how many meters? (Air resistance is negligible and $g = 10\,\dfrac{\text{m}}{\text{s}^2}$.)
[Figure: A basketball player throwing a ball toward a basket; $h_1 = ?$ and $h_t = 3/\cdot\,\text{m}$ are labeled.]
  • [(1)] $2/45$
  • [(2)] $2/46$
  • [(3)] $2/55$
  • [(4)] $2/64$

\textbf{191.} In the figure below, an athlete throws a ball with an initial speed of $6\,\dfrac{\text{m}}{\text{s}}$ and the magnitude of the ball's velocity at the moment of entering the basket is $5\,\dfrac{\text{m}}{\text{s}}$. The distance from the throwing point to the surface of the ground $(h_1)$ is how many meters? (Air resistance is negligible and $g = 10\,\dfrac{\text{m}}{\text{s}^2}$.)

\textit{[Figure: A basketball player throwing a ball toward a basket; $h_1 = ?$ and $h_t = 3/\cdot\,\text{m}$ are labeled.]}

\begin{itemize}
    \item[(1)] $2/45$
    \item[(2)] $2/46$
    \item[(3)] $2/55$
    \item[(4)] $2/64$
\end{itemize}

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