Question

If a rock falls from a height of 43 meters on​ Earth, the height H​ (in meters) after x seconds is approximately Upper H (x )equals 43 minus 4.9 x squared . ​(a) What is the height of the rock when xequals1.6 ​seconds? The height of the rock when xequals1.6 seconds is nothing meters.

Answer 1

2.96 seconds

Explanation:

Let H(x) = zero and solve for "x".

43 - 4.9x² = 0

4.9x²=43

x²=8.77

x=2.96

therefore, approximately when x=2.96seconds, the rock strike the ground.