In this problem, we'll consider the equation below to relate the displacement of the rock and time period in the horizontal direction.

$\overline{){\mathbf{x}}{\mathbf{=}}{{\mathbf{x}}}_{{\mathbf{0}}}{\mathbf{+}}{{\mathbf{v}}}_{{\mathbf{0}}}{\mathbf{t}}}$

A rock is kicked horizontally at 15 m/s from a hill with a 45 degree slope (figure below). How long does it take for the rock to hit the ground?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Projectile Motion: Horizontal & Negative Launch concept. If you need more Projectile Motion: Horizontal & Negative Launch practice, you can also practice Projectile Motion: Horizontal & Negative Launch practice problems.