Sara will slice a rectangular pyramid perpendicular - id14888435, Kitkatuu

Question

Mathematics: Sara will slice a rectangular pyramid perpendicular to its base. What two-dimensional plane section could result from the slice that Sara will make?

Kitkatuu · Accepted Answer

The rock will splash into the water 3.47s after Jane drops it.

Explanation:

Hi

Known data

$v_{i}=3m/s, y_{i}=50, y_{f}=0m$ and $g=10m/s^{2}$ .

We are going to use the formula below

$y_{f}=y_{i}+v_{i}t-\frac{1}{2} gt_^{2}$

Letting up direction be positive and computing with the known data, we have

$0=50+3t-\frac{1}{2} 10t_^{2}$

$0=50+3t-5t_^{2}$ a second-grade polynomial, we obtain two roots, so $t_{1}=3.47s$ and $t_{2}=-2.87s$ , due negative root has no sense, we take the positive one, so the rock will splash into the water 3.47s after Jane drops it.

Sara will slice a rectangular pyramid perpendicular to its base. What two-dimensional plane section could result from the slice that Sara will make?

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