Math Problem Statement
A rock is thrown upward with a velocity of 24 meters per second from the top of a 20 meter high cliff, and it misses the cliff on the way back down. When will the rock be 7 meters from ground level? Round your answer to two decimal places.
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Kinematics
Quadratic Equations
Formulas
Position equation: h(t) = h_0 + v_0 * t - 0.5 * g * t^2
Quadratic formula: t = (-b ± sqrt(b^2 - 4ac)) / 2a
Theorems
Quadratic formula
Suitable Grade Level
Grades 9-12
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