Question

Lisa is standing on the dock besides a leak she drops the rock from her hands into the lake after the rock hits the surface of the lake the rocks distance from the lake surface changes at a rate of -2 in./s if we still hold her hand 4 feet above the lake surface how far from Lisa‘s hand is the rock for seconds after he hits the surface

Answer 1

The distance to the lake surface from Lisa's hand is 48 inches. The distance to the rock is increasing at the rate of 2 inches per second.

The distance (y) from Lisa's hand to the rock at time t (seconds) is ...

... y = 48 +2t