If a rock falls from a height of 40 meters on Earth the height H in meters after x seconds is approximately H x 40 4 9x a What is the height of the rock when x 1 7 seconds The height of the rock when x 1 7 seconds is 25 839 meters Round to three decimal places as needed b When is the height of the rock 7 meters The height of the rock is 7 meters when x Round to two decimal places as needed seconds