Solve.
-If a rock falls from a height of 80 meters above the ground, the height H (in meters) after x seconds is approximately H = 80 - 4.9x². What is the height of the rock after 2 seconds? (Round your answer to the nearest tenth.)
A) 70.2 m
B) 300.4 m
C) -16.04 m
D) 60.4 m

Question

Quizplus · Accepted Answer

Substitute x = 2 into the equation: H = 80 - 4.9(2)² = 80 - 19.6 = 60.4 meters.

Solve. -If a Rock Falls from a Height of 80 Meters