Question

while hiking julia kicked a small rock off a ledge that was meters above a crevasse graph the situation using the formula y=-4.9t^2 +9 use the graph to determine when the rock will hit the bottom of the crevasse 2 meters below ground level round your answer to the nearest tenth of a second
The rock will hit the bottom of the crevasse in blank seconds

Answer 1

To determine when the rock will hit the bottom of the crevasse, we need to set y (height) equal to -2 meters.

-2 = -4.9t^2 + 9
-4.9t^2 = -11
t^2 = 11/4.9
t^2 = 2.2449
t ≈ 1.5 seconds

Therefore, the rock will hit the bottom of the crevasse 2 meters below ground level in approximately 1.5 seconds.