Use Mathematical Models
-If a Rock Falls from a Height $\mathrm { H }$

Multiple Choice

Use Mathematical Models
-If a rock falls from a height of 50 meters above the ground, the height $\mathrm { H }$ (in meters) after x seconds can be approximated using the formula $\mathrm { H } = 50 - 4.9 \mathrm { x } ^ { 2 }$ . What is the height of the rock after 3 seconds?

A) $5.9 \mathrm {~m}$
B) $405.9 \mathrm {~m}$
C) $- 166.09 \mathrm {~m}$
D) $35.3 \mathrm {~m}$